VR4 Successfully Flashed

[Mr.Salas]

Hey guys New in this stuff, what do I need to buy to reflash my ECU my car is from the year 1998 so prefacelift and its manual. Can I reflash the ECU? or there is a spesifice model of ecu?

[Davezj]

Hey guys New in this stuff, what do I need to buy to reflash my ECU my car is from the year 1998 so prefacelift and its manual. Can I reflash the ECU? or there is a spesifice model of ecu?

I think you mean you have a facelift 1998 or you could have one of the change over cars that had a bit of both in them.

If you can get to your ECU and look at the out side of the enclosure then it is a start if it is a metal box then i have only every seen 7201 processors in these and the answer is no at the moment.
But if it is a black plastic box then it is more than likely a 7202 processor in it an yes they can be flashed.

the best thing to do it remove the ECU and take a look inside.

pics of the different cases in this thread.

http://www.clubvr4.com/forum/showthread.php?t=24469

[kc427]

I think you mean you have a facelift 1998 or you could have one of the change over cars that had a bit of both in them.

If you can get to your ECU and look at the out side of the enclosure then it is a start if it is a metal box then i have only every seen 7201 processors in these and the answer is no at the moment.
But if it is a black plastic box then it is more than likely a 7202 processor in it an yes they can be flashed.

the best thing to do it remove the ECU and take a look inside.

pics of the different cases in this thread.

http://www.clubvr4.com/forum/showthread.php?t=24469

It seems that,
- metal case using 7201
- plastic case with MDxxxxxx using 7202
- plastic case with MRxxxxxx using 7203

has anyone seen any exception?

[evonut270]

hopefully soon the 7203 processor will be able to be flashed.there are tests being carried out and should hopefully be out when v1.42 of ecuflash is released.

[Mr.Salas]

Oh okies thanks , well I will take a look when I get the chance to do it. hmmm well yes its a 1998 model Prefacelift because it doesn't have the 2 fogs lamps at each end.

[Davezj]

Oh okies thanks , well I will take a look when I get the chance to do it. hmmm well yes its a 1998 model Prefacelift because it doesn't have the 2 fogs lamps at each end.

you might be lucky and have a facelift ECU which would be good for you.

[AderC]

Mine's a 1998 pre-facelift. Just been out to check the ECU and it's the plastic-case jobby I've been able to read the ROM from my car with the Openport 1.3 cable, which also indicates it's the 7202 rather than 7201 chip.

Openport 2.0 cable ordered!

aDe

[Davezj]

You lucky, lucky bugger!

Wish i had one of Those, i have 2 of the others.

where did you order the cable from was it from tactrix $169 for basic or $198 with extra connectors. or did you find somewhere else.

[AderC]

Entering my chassis number into ASA gives me a manufacture period 1998042, which I assume means week 42 of 1998, in which case mine must be very near the end of the prefacelifts, hence the facelift ECU :-)

I ordered from Tactrix, with the extra connectors.

I've also found the attached ROM file on my PC which I got hold of a while ago and is a tuned ROM from the guys in Russia. It has modified fuel and ignition maps, raised RPM limit, 0.9 bar boost via the stock solenoid, and raised limits for boost cut...

aDe

PS I obviously take no responsibility for any big smokey bangs caused by use of this ROM!

[PaddyB]

I'm confused about the part numbers - I have MD340289 which I understood to be the 7201 part but theres a bloke on OZVR4 who says he's got a 7202 in his, & that file Ade posted is prefixed MD340289 which sort of hints that I might be able to reflash. I guess Dave & I will be visiting Widnes soon

Back to the 7201: I'm randomly stabbing about various datasheets to see if I can find a match - I had a hunch that it might be an H8/300 but there's millions of versions of them so I can't say for sure. I'm now beginning to suspect that it might be an FPGA - given the MR16Core thingy. Any thoughts anyone ??

[bradc]

AderC - it means the 2nd week in April 1998

[Davezj]

i don't supose anyone has a ECU breakout wiring harnes i can beg/steel/borrow/buy as i think we are going to start something here.

Personally i don't have much experience with reprogramming microprocessors and the like. but i do know electronics, and i did do TCL proramming for 18 months (with one of my job) so it can't be that difficult to crack this one. however a correct chip number would be really usefull if anyone knows it for the MH7201.

[pbaron]

AderC - it means the 2nd week in April 1998

It means the 2nd 10 day period in April 1998.

[Ryan]

Looky what I have here

[Stevo]

is the mh7201FC flash able??? its out of a 1997 P/FL ST-R

[Gly]

no only the 7202 at this point in time

[Stevo]

bummer o well maby tha other1s got the right cpu, i must check that wen i go n strip the rest of the parts out of it

[Fully]

If your car had a 7201 or a 7203 ECU would there be any effects from swapping in a 7202 ECU as long as you match with manual/auto ECU to suit?

[Stevo]

i have no idea, but im going to find out if it does have one of those ecu's, where is the transmission ecu btw?

[bradc]

Yes you can swap ecu's across. Ryan has my old ecu from my facelift.