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evonut270
27-03-2010, 11:27 PM
come on folks lets see how many there are :mexicanwav

aboo
27-03-2010, 11:38 PM
This is not so easy on a VR4 but there are a few who have cracked the ECU's.

evonut270
27-03-2010, 11:41 PM
This is not so easy on a VR4 but there are a few who have cracked the ECU's.
how not?they run the same processors as the evos of which i have mapped quite a few.i have a few rom files for legnums/Vr4s but not had any to work on as yet.

aboo
27-03-2010, 11:55 PM
Where about in Scotland you from mate? You can have a go on my one if you like.

Nutter_John
27-03-2010, 11:58 PM
There are 3 types on the vr4
7201
7202
7203

the 2 and the 3 are mapable but the 7201 is not mapable via ecuflash

evonut270
28-03-2010, 12:02 AM
Where about in Scotland you from mate? You can have a go on my one if you like.from perth mate /woot2

kinkyafro
28-03-2010, 12:02 AM
There are 3 types on the vr4
7201
7202
7203

the 2 and the 3 are mapable but the 7201 is not mapable via ecuflash

thought the 3 wasn't via ecuflash?

Nutter_John
28-03-2010, 12:03 AM
3 has now been done , it's in beta mode but you can now flash it

evonut270
28-03-2010, 12:03 AM
There are 3 types on the vr4
7201
7202
7203

the 2 and the 3 are mapable but the 7201 is not mapable via ecuflashhi john,yeah im aware of some of the processor types for these cars :thumbsup:

kinkyafro
28-03-2010, 12:07 AM
3 has now been done , it's in beta mode but you can now flash it

ahhh it's all going on these days eh :)

Nutter_John
28-03-2010, 12:07 AM
I only found out earlier today whilst browsing some Lancer website

Wodjno
28-03-2010, 12:12 AM
/yes

aboo
28-03-2010, 12:24 AM
from perth mate /woot2Not to far from me. You'll have to get your self to the next Jock meet.

evonut270
28-03-2010, 12:27 AM
Not to far from me. You'll have to get your self to the next Jock meet.will i not get slated for driving an evo?:cowboy: where are you from?

aboo
28-03-2010, 12:40 AM
will i not get slated for driving an evo?:cowboy: where are you from?I'm from Aberdeen & no there are a couple of Evo owners on here. They have come from VR4's(Nutter John & Spirit).

Hoping a few of us will be going to Crail next month So keep an eye on the meets & you'r welcome to join us & get you ass kicked on the 1/4 mile:jester:

evonut270
28-03-2010, 01:21 AM
I'm from Aberdeen & no there are a couple of Evo owners on here. They have come from VR4's(Nutter John & Spirit).

Hoping a few of us will be going to Crail next month So keep an eye on the meets & you'r welcome to join us & get you ass kicked on the 1/4 mile:jester:if you can do better than a 12.5sec quarter then yes i will get my ass kicked:thumbsup:

aboo
28-03-2010, 01:35 AM
I'll try my best :)

Turbo_Steve
28-03-2010, 01:43 PM
will i not get slated for driving an evo?

Goodness me, no! You're our spiritual brethren :D
Plus several have got Evos already.

The VR4 is just the more grown up Evo - it's much easier to drive, a little bit porkier, a bit slower, takes less risks and usually has a family :D
Or is that the owners? Hmm...

evonut270
28-03-2010, 02:16 PM
Goodness me, no! You're our spiritual brethren :D
Plus several have got Evos already.

The VR4 is just the more grown up Evo - it's much easier to drive, a little bit porkier, a bit slower, takes less risks and usually has a family :D
Or is that the owners? Hmm...Reading that I thought you had met me before :happy:

Nick Mann
28-03-2010, 05:18 PM
I tinker with mine, through the medium of a MAP ECU 2. I believe I have a 7202 but when I bought the MAP 2 no-one was aware of ECU flashing potential on the VR4. I would like to get in to that, simply to raise the fuel cut limit which is what is currently holding me back.

evonut270
28-03-2010, 05:35 PM
I tinker with mine, through the medium of a MAP ECU 2. I believe I have a 7202 but when I bought the MAP 2 no-one was aware of ECU flashing potential on the VR4. I would like to get in to that, simply to raise the fuel cut limit which is what is currently holding me back.If you have the means to do it then please do.

Wodjno
28-03-2010, 05:45 PM
I would like to get in to that, simply to raise the fuel cut limit which is what is currently holding me back.

You can do that with the MAP2 can't you Nick ?

Nutter_John
28-03-2010, 05:52 PM
No Glenn you can not remove the fuel cut with as at some point you will flow enough pseudo air through the system that it thinks that you need to fuel cut .

All you end up doing is shifting the point you hit it even with bigger injectors . Reflashing the ecu allows you to move it well out of the way of normal tunning

Wodjno
28-03-2010, 06:22 PM
Really. Thought as you have the ability to go Mafless, u already have the ability to eliminate fuel cut. You have to build a New Map to go Mafless, so why can't u clamp the Maf sigmal below it's limit and build your own MAP above this point ?

This how it's done on the EMU.

EdIT..

Just re-read you post John. Understand ur saying it's only moveable to a higher point.
So what in the ECU is the limiting factor ?
Also would have thought on Standard Tub's that the Limit can be shifted far enuff to allow No Cut!

evonut270
28-03-2010, 06:55 PM
Really. Thought as you have the ability to go Mafless, u already have the ability to eliminate fuel cut. You have to build a New Map to go Mafless, so why can't u clamp the Maf sigmal below it's limit and build your own MAP above this point ?

This how it's done on the EMU.

EdIT..

Just re-read you post John. Understand ur saying it's only moveable to a higher point.
So what in the ECU is the limiting factor ?
Also would have thought on Standard Tub's that the Limit can be shifted far enuff to allow No Cut!
I have not checked on the table as to how much load it will take before cut but I'd assume the maf limit will be around 319 which I doubt most vr4s will never see. If someone can send me a rom image I'll try locate the limit and raise it

Nick Mann
28-03-2010, 07:00 PM
The MAP2 sends and air flow signal to the original ECU. At some boost level, to get the right fuelling, the airflow the map2 needs to send puts it back into fuel cut territory.

If I understand it correctly, the emanage drives the injectors directly, whereas the map2 doesn't.

evonut - if I knew how to offset the fuel cut by flashing the ecu, it would already be done! I need to spend some time working out what cable and what software I need to do it. Then work out the tables so I modify the right bit!

Nick Mann
28-03-2010, 07:02 PM
I have not checked on the table as to how much load it will take before cut but I'd assume the maf limit will be around 319 which I doubt most vr4s will never see. If someone can send me a rom image I'll try locate the limit and raise it

Not sure I can give you a number. Fuel cut is most likely to arrive at 4000ish RPM at raised boost. It doesn't hit the end of the MAFs capabilities, it hits the part of the fuelling table where the ECU says "too much air - pull fuel to be safe".

apeman69
28-03-2010, 07:26 PM
Nick, fuel cut is movable with MAP2. I haven't got it since the MAP2 was put in.
Have a look at this extract from the V3.1 manual. Don't know if this is a revised feature from the firmware upgrade though. The full manual is available on the MAP2 website.
It means nowt to me but perhaps it will to you.

evonut270
28-03-2010, 07:57 PM
Not sure I can give you a number. Fuel cut is most likely to arrive at 4000ish RPM at raised boost. It doesn't hit the end of the MAFs capabilities, it hits the part of the fuelling table where the ECU says "too much air - pull fuel to be safe".I know it won't be hitting the mafs capabilities and I have a rough idea where the boost limit is as I have a few vr4 maps with possible boost limit locations but no car to test them on. If the boost limit is correct the cut will hit around 160-170 load before boost cut. If someone can log the load at which boost cut occurs I can work from there.

TAR
28-03-2010, 08:14 PM
Nick, fuel cut is movable with MAP2. I haven't got it since the MAP2 was put in.
Have a look at this extract from the V3.1 manual. Don't know if this is a revised feature from the firmware upgrade though. The full manual is available on the MAP2 website.
It means nowt to me but perhaps it will to you.

I recall discussing this with Ben. I didn't really understand what he said, it is possible but very time consuming and tricky to get right..... I think?




Ignorance is bliss...

:happy:

Nutter_John
28-03-2010, 08:33 PM
The address for fuel cut is known within the VR4 rom , it is already in the xml files ( although it may be wrong depending which version you have )

Ape you can not remove fuel cut , as all you are doing is presenting the standard ecu with a lower figure than it should be to trick it into doing the correct fueling , even with 530cc injectors like you have at somepoint you will go beyond that limit



Evonut

Boost cut happens between 3500 - 4500 when the load table is around 0.48 bar for greater than 2 seconds , I have moved this to a higher region and it works fine

aboo
28-03-2010, 08:34 PM
I know it won't be hitting the mafs capabilities and I have a rough idea where the boost limit is as I have a few vr4 maps with possible boost limit locations but no car to test them on. If the boost limit is correct the cut will hit around 160-170 load before boost cut. If someone can log the load at which boost cut occurs I can work from there.As I said in the othe thread you could try on my car:)

evonut270
28-03-2010, 08:37 PM
The address for fuel cut is known within the VR4 rom , it is already in the xml files ( although it may be wrong depending which version you have )

Ape you can not remove fuel cut , as all you are doing is presenting the standard ecu with a lower figure than it should be to trick it into doing the correct fueling , even with 530cc injectors like you have at somepoint you will go beyond that limit



Evonut

Boost cut happens between 3500 - 4500 when the load table is around 0.48 bar for greater than 2 seconds , I have moved this to a higher region and it works fine
Ok so the cut delay timer is around 2000 ms can you point me in the direction of the xmls so I can compare with my own.

Nutter_John
28-03-2010, 08:41 PM
you already know where they are you live on the same site :)

geekmapped has a copy

apeman69
28-03-2010, 08:54 PM
Nut_Jo, Nick states that he wants to raise the limit and not eliminate it. Unless he is at the point where it cannot be moved further then there may be hope: that's all I'm saying. If he's reached the point where the next option is injector upgrades then fair enough.
BTW are you in danger of cutting your own throat here in terms of 'KinkyJohn the AfroNutter enterprises'? The Microsoft/Apple scenario comes to mind (you wish!). After all, who is this registered user evonut? :inquisiti

Nutter_John
28-03-2010, 08:58 PM
he resides on the geekmapped forum and mlr , hence i know of him :)

yes nick is running stock ijectors so has a lowering theshold than yours

Kenneth
28-03-2010, 09:01 PM
You would have all found out that information sooner had you done a search... /haz

Seriously though, it was published on these forums at least 3 years ago! Probably explains why it has fallen out of common knowledge I suppose.

Nick Mann
28-03-2010, 09:36 PM
AFAIK the MAP2 fuel cut defender is a voltage cap jobby for a hotwire MAF. The VR4 uses a frequency MAF instead, which the MAP2 can tune around but not fool. The only way of offsetting the fuel cut with a MAP2 is to lean the map at the point of fuel cut, effectively keeping the frequency below the fuel cut threshold. You can make this easier to achieve by increasing the fuel available at a certain injector duty cycle - this means you can input a lower frequency from the MAP2 to the original ECU, whilst having more air AND more fuel than the ECU thinks there is. The easiest way of doing this is to supply the fuel with greater flow/pressure, so a pump and pressure regulator mean that the same injector flows more at the same duty cycle. A more effective way of increasing the fuel is to increase the injector size, but that is not so straightforward and brings other complications. Either way, all you are doing is offsetting the fuel cut by fooling the ECU, not raising the fuel cut limit on the cars original map.

I think?!

Nutter_John
28-03-2010, 09:39 PM
Spot on Nick

Turbo_Steve
28-03-2010, 09:53 PM
And every time you do that, you end up with a little bit more timing as you head down the load scale.

evonut270
28-03-2010, 09:54 PM
you already know where they are you live on the same site :)

geekmapped has a copyI have those I wasn't sure if there were
more available in that case if they work then mapping them won't be an issue

Nutter_John
28-03-2010, 09:58 PM
Those maps will flash all the 2's and the 3's although some tables are still missing in some of them

evonut270
28-03-2010, 10:00 PM
Nut_Jo, Nick states that he wants to raise the limit and not eliminate it. Unless he is at the point where it cannot be moved further then there may be hope: that's all I'm saying. If he's reached the point where the next option is injector upgrades then fair enough.
BTW are you in danger of cutting your own throat here in terms of 'KinkyJohn the AfroNutter enterprises'? The Microsoft/Apple scenario comes to mind (you wish!). After all, who is this registered user evonut? :inquisitiIm just a grease monkey who plays with stuff I know nothing about /help

phosty
28-03-2010, 10:14 PM
Evonut, I'm pretending to map my own (Aberdeen based too) but not being very successful at the moment.


Boost cut happens between 3500 - 4500 when the load table is around 0.48 bar for greater than 2 seconds , I have moved this to a higher region and it works fine

John, I have struggled to raise my boost cut and as a result can't hold boosts above 9-10 psi before it cuts at 3-4000ish rpm.

In my Ecuflash XML files the boost cut table address is 11d1b (with the rpm axis at 2cfaa, 9 elements). Originally the rom had:

rpm load
3500 - 160
4000 - 160
4500 - 160
5000 - 160
5500 - 160
6000 - 154
6500 - 148
7000 - 148
7500 - 148

I have subsequently changed all values to 250 (not in one go but I got no effect so I slowly raised it) and still get boost (Load?) cut with boost above 10psi.

So have I got the right rom address?

btw 0.48 bar would be ~7 psi so are you sure about that boost cut limit? My stock legnum runs with 8 psi with no issues.

Nutter_John
28-03-2010, 10:16 PM
a load value of 160 is roughly 0.6 bar , this is due to use living at 1 bar

Yeah the load limit is a value you must not exceed for more than a period of time , so you can not stay in that zone for long

Wodjno
28-03-2010, 10:38 PM
John..

Not looked at any of these files yet. :(
Without knowing anything so don't slate me for saying something totally rediculous /help

Can the time period be altered that the load limit for that cell shouldn't exceed? Thus allowing this cell to be passed etc ?
Or is this to dangerous /Hmmm

Cheers

Wodj :D

evonut270
28-03-2010, 10:52 PM
John..

Not looked at any of these files yet. :(
Without knowing anything so don't slate me for saying something totally rediculous /help

Can the time period be altered that the load limit for that cell shouldn't exceed? Thus allowing this cell to be passed etc ?
Or is this to dangerous /Hmmm

Cheers

Wodj :DThe boost cut delay timer can be set at a threshold of which it will never reach. So in effect boost cut will never happen. Iv been going through some addresses today for the delay timer so I anyone wants to try it I can post up the address. Also I'll look into the boost limit addresses

Nutter_John
28-03-2010, 10:52 PM
Yes and yes Glenn

3rd gear may go through it in 2.1 seconds
4th gear may go through it in 2.4 seconds
5th gear may go through it in 3.2 seconds

which value do you set it too , would 3.2 be too high a load for instance you lose you wastegate feed and are free boosting it would not cut untill too late

Wodjno
28-03-2010, 11:13 PM
OK..
Speaking from my personal driving characteristics here only....

I don't dump the loud pedal in 5th or 4th at 3000rpm. 1st and 2nd yes. 3rd would be nice /yes
I have learn't over many years how to work around fuel cut without reducing boost.
So only alter the time value to allow 3rd gear pulls to stay in that Zone a tad longer.

Cheers

Wodj

evonut270
28-03-2010, 11:23 PM
Evonut, I'm pretending to map my own (Aberdeen based too) but not being very successful at the moment.



John, I have struggled to raise my boost cut and as a result can't hold boosts above 9-10 psi before it cuts at 3-4000ish rpm.

In my Ecuflash XML files the boost cut table address is 11d1b (with the rpm axis at 2cfaa, 9 elements). Originally the rom had:

rpm load
3500 - 160
4000 - 160
4500 - 160
5000 - 160
5500 - 160
6000 - 154
6500 - 148
7000 - 148
7500 - 148

I have subsequently changed all values to 250 (not in one go but I got no effect so I slowly raised it) and still get boost (Load?) cut with boost above 10psi.

So have I got the right rom address?

btw 0.48 bar would be ~7 psi so are you sure about that boost cut limit? My stock legnum runs with 8 psi with no issues.change the boost limit address to 11c98 and try that.also try 11080

phosty
29-03-2010, 06:27 PM
change the boost limit address to 11c98 and try that.also try 11080

At that 11c98 address all the table cells are 160. I changed them to 230 but still get boost cut at the same boost/rpm so I don't think it's right yet.

At 11080 the numbers don't look right to start with:

rpm load
3500 - 184
4000 - 179
4500 - 174
5000 - 170
5500 - 165
6000 - 160
6500 - 160
7000 - 160
7500 - 2

So I haven't tried changing those.

I've attached my stock rom but I assume it's the same as the ones you already have.

evonut270
29-03-2010, 06:57 PM
At that 11c98 address all the table cells are 160. I changed them to 230 but still get boost cut at the same boost/rpm so I don't think it's right yet.

At 11080 the numbers don't look right to start with:

rpm load
3500 - 184
4000 - 179
4500 - 174
5000 - 170
5500 - 165
6000 - 160
6500 - 160
7000 - 160
7500 - 2

So I haven't tried changing those.

I've attached my stock rom but I assume it's the same as the ones you already have.11080 is the only table I can find remotely close if needed the rpm elements can be dropped so they fall in line if that address does not work I'll get back onto it later

Turbo_Steve
29-03-2010, 07:34 PM
To be honest, I wouldn't want to defeat the ECUs boost limit without being absoloutely positively definitely sure that it's setup to overfuel like made at that load.

evonut270
29-03-2010, 07:56 PM
To be honest, I wouldn't want to defeat the ECUs boost limit without being absoloutely positively definitely sure that it's setup to overfuel like made at that load.Looking at the fuel maps They will no doubt be very rich Once he load starts to rise and it's not defeating the limit merely raising it.I'm only ask it be tested to confirm the addresses.I wouldn't dream say to anyone to whack the boost up now the limit can be raised without mapping it first

Turbo_Steve
29-03-2010, 10:51 PM
Just a-chicken :)

And you might be surprised how rich it isn't in the higher load scales. I've seen all sorts of nasty's in factory ECUs, especially at high load / RPMs.

evonut270
29-03-2010, 11:39 PM
Just a-chicken :)

And you might be surprised how rich it isn't in the higher load scales. I've seen all sorts of nasty's in factory ECUs, especially at high load / RPMs.dependant on supporting mods yeah i agree.

phosty
30-03-2010, 12:24 AM
Evonut, how did you arrive at those suggestions for the boost cut table address? I've been looking through the roms a bit myself.

The original 11d1b was obviously wrong as it clashes with the range of the 'Cat-Warmup Ignition Retard Map #1'
The 11c98 address is slap bang in the middle of a load of hex 80 values so I'm not sure why you suggested that one.
I'll try 11080 tomorrow, fingers crossed!

Any general tips for spotting tables?

evonut270
30-03-2010, 11:06 AM
Evonut, how did you arrive at those suggestions for the boost cut table address? I've been looking through the roms a bit myself.

The original 11d1b was obviously wrong as it clashes with the range of the 'Cat-Warmup Ignition Retard Map #1'
The 11c98 address is slap bang in the middle of a load of hex 80 values so I'm not sure why you suggested that one.
I'll try 11080 tomorrow, fingers crossed!

Any general tips for spotting tables?I don't think the last address I gave you will work. Iv been comparing galant/legnum roms and they are quite different so finding more tables is going to be a bit of work

phosty
30-03-2010, 06:22 PM
You're right - 11080 didn't work either.

Does anybody know if it is safe to flash a EM2004 ecu like mine with an EM2005 and vice versa?

Eurospec
30-03-2010, 09:31 PM
Somewhere on here i put the correct boost cut address that i found. Did you try that one?

I also sent nutter an updated xml with it in cause i couldnt figure out how to post it on here!

Cheers,

Ben.

Nick Mann
30-03-2010, 09:41 PM
Now you've said that, Ben it was easy to find:

http://www.clubvr4.com/forum/showthread.php?t=44551&page=3

a few posts down that page for the relevant stuff.

kinkyafro
30-03-2010, 10:00 PM
You're right - 11080 didn't work either.

Does anybody know if it is safe to flash a EM2004 ecu like mine with an EM2005 and vice versa?

Not an issue, but theres no gain. The roms are identical bar 2 bytes of identifier.

phosty
30-03-2010, 10:26 PM
Hi Ben, I have been studiously following your earlier exploits with Atiks car and the address you gave in that older thread was exactly the one I used: 11d1b.

As I said in post #57 11d1b didn't work for me and when I looked at the rom file it was obviously wrong as it clashes with the range of the 'Cat-Warmup Ignition Retard Map #1':

<table name="Cat-Warmup Ignition Retard Map #1" category="Timing" address="11c97" type="3D" swapxy="true" scaling="TimingTrim8">
<table name="Load" address="2cfd4" type="X Axis" elements="17" scaling="Load"/>
<table name="RPM" address="2cf9a" type="Y Axis" elements="19" scaling="RPM"/>
</table>

i.e. that map starts at address 11c97 (decimal 72855) and is an 17x19 sized table so has 323 datapoints. 72855 + 323 = 73178 or 11dda so the 11d1b lies in the middle of that table:

uploaded/4134/1269988741.jpg

Also there are none of the usual 2D table prefixes at the 11d1b address so I'm at a loss as to how changing those values allowed you to avoid the fuel cut?

Eurospec
31-03-2010, 12:01 AM
Hi Phil,

ahhhhhh- i just realised- maybe!- yours is 20030011 whereas the one i worked on was 20030010. The xml def is the same for all, but do we know that the Roms all follow the same defn? (ie that it is correct that there is one xml for all roms?).

The cat warm up retard map is to do what it says on the tin. I use this trick to get tuned cars through emmissions- retard the timing to light the cat up, and happy days through it goes! It cant possibly affect the boost cut. The boost cut table should have a 3 digit entry in it (like 148 iirc) not two.

Cheers,

Ben.

phosty
31-03-2010, 12:20 AM
Hi Ben.

My copy of the xml def file for the 20030010 just refers to 'vr4base1' exactly the same as 20030011 so that doesn't explain the issue.

Don't forget the table values are in hex as well as scaled by a factor of 5/4 (look under scalings for 'Loadboost') to give you the number you see in ECUFlash i.e. 80 is actually [8*16]*5/4=160.

btw you half managed to upload your xml definition file ....but you only gave half the webpage address in the other post:

http://www.clubvr4.com/forum/uploaded/2298/1259849329.jpg

Phil

Eurospec
31-03-2010, 01:41 PM
Yeah but what if vr4 base is only applicable for certain roms? Would that not give a possible explanation as to why we get bc on one rom, but not the other?

Cheers,

Ben.

Nutter_John
31-03-2010, 01:46 PM
vr4base it the standard def file used for a vr4 , for each rom there may be differences and these can either inherirt the base def or create a whole new one

so i could have a def file for wobble and the only differences between wobble and the standard vr4 is that the boost cut is in a different place , so you can inherrit all features of the vr4base but also define the boost cut in a different place

evonut270
31-03-2010, 03:07 PM
Yeah but what if vr4 base is only applicable for certain roms? Would that not give a possible explanation as to why we get bc on one rom, but not the other?

Cheers,

Ben.
The base XML will help with some addresses others will be off dependant on year etc. The only 2d table I can find for boost cut is 1153c I'll go through the code again tonight to make sure iv not missed any other points

X-COM
01-04-2010, 11:58 AM
yeap you can flash ecu with 7202 to 03 and vice versa as the firmware is exactly the same, furthermore you can flash manual ecu with auto firmware and vice versa and it will work.

did anyone cracked already any up/down shift for gearbox ecu? mainly for TM2405 firmware because I am having really hard times with it, well I have all the 2d and 3d maps from disassembly but have no idea how to get parameters into human readable values

kinkyafro
01-04-2010, 06:47 PM
yeap you can flash ecu with 7202 to 03 and vice versa as the firmware is exactly the same, furthermore you can flash manual ecu with auto firmware and vice versa and it will work.

did anyone cracked already any up/down shift for gearbox ecu? mainly for TM2405 firmware because I am having really hard times with it, well I have all the 2d and 3d maps from disassembly but have no idea how to get parameters into human readable values

Whats this TM2405 firmware of which you speak?

X-COM
03-04-2010, 04:57 PM
that is our postlift vr4 transmission ecu firmware, same think we are speaking for engine ecu. same way to tune it with ecuflash just the maps are differend as anyone could imagine they are. research is needed to open it up for folks as this area of tuning is not covered anywhere else but since I can play with it, since about a year I imagine there is few other buddys doing it anf they just do not share their knowledge yet.

kinkyafro
03-04-2010, 05:52 PM
that is our postlift vr4 transmission ecu firmware, same think we are speaking for engine ecu. same way to tune it with ecuflash just the maps are differend as anyone could imagine they are. research is needed to open it up for folks as this area of tuning is not covered anywhere else but since I can play with it, since about a year I imagine there is few other buddys doing it anf they just do not share their knowledge yet.

Didn't know anyone had read it off can you post it up along with an ecu model number?

X-COM
04-04-2010, 11:22 AM
it does not matter actually what ecu case it is. ok there are 2 different hardware versions for postlift T-ECU but you can upload firmware in any one of them regardless if this is hardware from end of 1997 thru end of 1998 or the lastest one from 1999 till the end of production.
i do not have such a possibility in this instance, send me your email address and you will get it on tuesday when my trip is over.

phosty
06-04-2010, 10:30 PM
Sorry, address 1153c does not work either - I'm still load/boost cutting at 14 psi when I cross 4000 rpm with all the values in that address set to 210 (or as high as 250).

I've found I have to keep the boost lower than approx 9 psi until I get above 4500rpm, then it seems to be OK up to 13-14 psi. But sometimes the boost spike catches the MAP2 boost controller out so I have to go easy on the loud pedal.

kinkyafro
07-04-2010, 07:30 PM
it does not matter actually what ecu case it is. ok there are 2 different hardware versions for postlift T-ECU but you can upload firmware in any one of them regardless if this is hardware from end of 1997 thru end of 1998 or the lastest one from 1999 till the end of production.
i do not have such a possibility in this instance, send me your email address and you will get it on tuesday when my trip is over.

Just PM'd my email addy :)

evonut270
21-04-2010, 04:34 PM
Hi Ben.

My copy of the xml def file for the 20030010 just refers to 'vr4base1' exactly the same as 20030011 so that doesn't explain the issue.

Don't forget the table values are in hex as well as scaled by a factor of 5/4 (look under scalings for 'Loadboost') to give you the number you see in ECUFlash i.e. 80 is actually [8*16]*5/4=160.

btw you half managed to upload your xml definition file ....but you only gave half the webpage address in the other post:

http://www.clubvr4.com/forum/uploaded/2298/1259849329.jpg

Phil
Can someone try the following addresses.for boost cut
114a6
114b6

ivansan
24-04-2010, 10:12 AM
I am tryed, boost cut for AT transmission 114A6 and for Manual 114B6

Patryn999
29-04-2010, 12:19 PM
Uh, did you mean that you tried both those addresses and they worked, or you tried and they made no difference?

Patryn999
01-05-2010, 08:20 AM
Also, the xml definition file used in Merlin's EcuFlash VR4 Tuning guide (that has lean spool, etc) is this publically available? From what I've heard people say the addresses don't change much between our ECU editions.

ivansan
07-05-2010, 04:33 PM
I mean on the automatic transmission address "114a6" is worked but "114b6" isn't worked! On the manual "114b6" is worked but "114a6" isn't! Auto and man is difference!

micha11
21-07-2010, 10:08 PM
i have maps for 98/100/102 octane, without any fuelcut and fuelcut from 1 to 1,5 bar, for manual and automatic. with and without knock control
all did a very good friend for me, he repairs ecus professional
i can tell him all i want and he takes it
all i have to do is write to ecu via ecu flash