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View Full Version : Greddy PRofec B - Spec II - Set-Up



NevGroom
18-04-2005, 03:34 PM
I am trying to set-up my Greddy Profec and am making limited headway. I trust there is somebody there who knows what I should be doing.

The unit will do the following for both Hi and Lo settings;

Set Boost %
Set Gain %
Set Start Boost (psi or kPa)
Set Warning (psi or kPa)
Set Limiter (psi or kPa)

My problem is I don't know what the optimal settings are. In Lo mode, I would like to see it pretty much factory spec whereas in Hi mode, more like 95% of the mechanicals' capabilities. Can anybody pass on recommendations/advice.

All gratefully accepted.

Nev

aaron68nz
19-04-2005, 01:14 PM
I had one professionally installed in late January in NZ by a well known Mitsubishi specialist who also set the settings. Can see at end of post what I've done to my car. Notably I still have the standard exhaust although now I'm in Australia I might soon be looking at getting something after market that is still legal here.

Set Boost is at 20%
Set Gain is 20%
Set Start Boost i.e Set Gain is 0.8 (x 100 kPa)
Set Warning is 1.00 (x 100 kPa)
Set Limiter is L.25

In January heat in Auckland, ie mid 20s celcius the highest peak boost was 0.97 (x 100 kpa). Only had the car a couple of days before moved here and in fact only finalized Australian registration today so have't had the opportunity to play around much with it yet. Oh yes there are some low settings the guy put in too but haven't bothered driving at low settings!

Ok so maybee tommorrow I'll drive it at the Lo setting and see how it feels and note the numbers for you.

NevGroom
19-04-2005, 01:22 PM
Fantastic help - At least it gives me somewhere to start that won't result in the persistant fuel cuts.

Is the Set Limiter 1.25?

Would be interested in the low settings (do have a M-way commute which would be better on the walet if it wasn't chewing so much fuel).

Will let you know how I get on

Nev

aaron68nz
19-04-2005, 02:18 PM
Looks like an L to me as in L for Limiter. Haven't played with or changed the setting but on the screen it's L.25 and in fact in the instruction book I'm looking at now it shows an example and it's definitly an "L". The instruction book example has L.35 for HI Mode and L.30 for LO Mode. I guess you have the instruction book?
Can't believe how expensive your petrol is there. No wonder petrol comsumption is an issue.

aaron68nz
19-04-2005, 02:42 PM
Just checked and on the LO Mode everything has been set the same exept for Set Gain which is at 0.65 instead of 0.8 on HI.
Don't know whether it was me or the installer that got the 0.97 high and whether or not this was a spike. Interesting to see how colder temperatures at these settings might effect things or whether freeing up exhaust flow or very hard driving would neccessitate adjusting these figures.

NevGroom
21-04-2005, 07:56 AM
Aaron68nz

I am able to adjust the following;

Gain
Set Gain
Warning %
Warning (that 'L' value)
Peak

What settings do you have for these?

Nev (wishing he was a little more capable) :sad3:

jerryd_33
25-04-2005, 08:45 PM
hi there M8,
I have got the same fitted and workingin my car. Bit lazy right now to get the info but will do so when at work and post the settings I have got mine set at in the evening.
Actually not lazy but thinking of someone special whom I want to tie the not with!!!!!!!!!!
:happy:

aaron68nz
26-04-2005, 11:20 PM
Both "Gain" and "Set" (as show on left hand side of display) are 20%. To find the "Set" value you turn the Set knob.
Set Gain i.e. Start Boost (which is a misnommer if you ask me) is 0.8
Warning is 1.00
Warning (that 'L' value) is L.25
Peak is peak boost pressure recorded in either lo or hi mode. Mine so far is 0.97. Generally I find I get 0.88-0.95 with above settings. I do have factory exhaust still fitted though. Mind you I rarely litterally floor the accelerator.

NevGroom
27-04-2005, 07:57 AM
Aaron - Thanks for that mate will try them out.

Jerry - Would be interested in your settings too (it's a close call between her & the VR4 though :leer: ).

Have been fiddling about for the last few days, got a neat doc here (http://forums.evolutionm.net/showthread.php?t=75594). Am finding that with any severe throttle am getting a noise like, well, like old playing cards we used to peg to the pedal bike spokes. I guess it's pre ignition but obviously not good....... I need a base from where to start (hence the questions) then I can fiddle.

The only other mod is the e-cat at the moment - perhaps I should put the new airflow in before I get too engrossed in the settings..............

aaron68nz
28-04-2005, 12:13 AM
Am finding that with any severe throttle am getting a noise like, well, like old playing cards we used to peg to the pedal bike spokes. I guess it's pre ignition but obviously not good


Can't remember where I read it but the controler valve in the engine bay does make some sort of noticible similar noise apparently and if so nothing to worry about. And naturally the more boost the more it will be working. Will try and find/remember where I read this. I usually have stereo or noisy kids too loud and distracting to notice such noises but will see if I can notice such a noise today.

Page 37 of controler manual says " it is normal for the Valve unit to make a clicking sound when it is operating"

NevGroom
03-05-2005, 08:03 AM
This is getting a little more curious. My settings are as per Aaron's recommendation above. I had to load the tank with nasty ASDA 95 octane and the settings were fine. Have now put Optimax in and the 'clicking' has started again - leads me toward thinking it is pre-ignition. Will have to tinker with the settings now I fear (which will involve doing a lot of reading so I know what I'm doing!).

Nev

aaron68nz
04-05-2005, 12:30 AM
I use optimax too. What was the max boost you were getting? As for spark plugs I use the long life iridium ones although I don't know if this may be relevant. After reading about BDA's engine I'm now more concerned about keeping my air flow a bit more restrained so will keep exhaust and air intake as standard unless one day I change engine management to cater for extra fuelling. I guess the engine management just ensures a certain fuel pressure for which the factory pump can handle so getting an upgraded pump won't change things????

aaron68nz
12-05-2005, 12:48 AM
First time on the open road at the weekend and found at my above settings BUT with "warning" at 0.91 was getting max boost of 1.00 at moderate throttle where car auto downchanged from 5th to 4th! I think ideally different settings are needed for open road and around town driving. Maybee "lo" could be for open road and "hi" for around town or something.
I think that "Gain" is a figure you don't fiddle with once adjusted for your car. So that would leave reducing boost options to moving "set" down a few % or allowing the waste gate to open a bit earlier, ie by decreasing "set gain" pressure.

Louis
28-05-2005, 05:04 PM
HI, How are doing with the greddy now, is it all sussed out, I was looking at one of these but still not sure, cheers Louis

Eagleton
09-04-2007, 06:50 PM
Hi

I´ve been looking at a diagram of our twin turbo engines, you guy´s that have the profec B-spec II, where did you put your T-split for the vaulve, or how did you install it?

From what I can see both turbo´s have the same pressure because of the hose running between their wastegates, right? So...erhm..help me (=

A drawing on the diagram beneath would help....*embarrassed*

http://i50.photobucket.com/albums/f338/Eagleton/BoostEMU1a.jpg

bernmc
09-04-2007, 09:21 PM
Hi

I´ve been looking at a diagram of our twin turbo engines, you guy´s that have the profec B-spec II, where did you put your T-split for the vaulve, or how did you install it?

From what I can see both turbo´s have the same pressure because of the hose running between their wastegates, right? So...erhm..help me (=

A drawing on the diagram beneath would help....*embarrassed*

http://i50.photobucket.com/albums/f338/Eagleton/BoostEMU1a.jpg

Do a search - this has been discussed umpteen times. Theres a detailed article in the members section with diagrams too....

Eagleton
09-04-2007, 09:26 PM
Hi

I tried searching before, but for some reason I dont have permission to the members section, do I need to be a paying member to watch those pages?

bernmc
10-04-2007, 08:24 AM
Hi

I tried searching before, but for some reason I dont have permission to the members section, do I need to be a paying member to watch those pages?

Yup :D

And worth every penny ;)

dickytim
14-08-2010, 05:03 AM
this is very useful, however when trying to set this I found that the "L" setting would only go to 20% but even set there there was no difference between off, lo and hi setting.

I am starting to think either I have a boost leak or when my alarm was fitted they fecked the settings as they did magange to unplug it and not hook it back up again after.

Louis
14-08-2010, 09:42 AM
check page 18 in the attached manual for info on limiting boost

aaron68nz
15-08-2010, 04:22 AM
this is very useful, however when trying to set this I found that the "L" setting would only go to 20% but even set there there was no difference between off, lo and hi setting.

I am starting to think either I have a boost leak or when my alarm was fitted they fecked the settings as they did magange to unplug it and not hook it back up again after.


When I had my auto transmission pulled out they plugged the wastgate controlling vacuum tube in wrong so it was overboosting as the wastegate was not getting vaccum pressure to open. Took a while of figuring out the diagram in the manual to see where it should be going.