Greddy Profec B Spec 2 Ebc Help...pls

[L!sa]

i just brought a r34 gtt everything all stock but its have a Greddy Profec B Spec II, the old owner set on 14 psi with power fc but he took the power fc with him so now just run stock computer, can anyone help me to set it to 12 psi pls (now im broke by brought this car dnt have cash to go dyno yet i knw its sound stupid but...)

now my setting are

Gain 15%

Set Gain 0.85

Warning 1.30

Warning L.20

_______ 3.06

Peak OFF

[Race__24]

I'm not familiar with that particular model but reducing the gain will reduce your boost. Take 5% of and see how that goes. I'd recomend only running a max of 11psi for stock turbo and computer, 10psi if it's your daily.

For more information on the unit do a search, there will be plenty of threads on here about it

EDIT- I think it's the set gain that you want to adjust, just lower that and see what happens. From what I just read the %gain is to do with how fast the actuator opens and the set gain controls your overall boost

Edited March 6, 2009 by Race__24

[and3_3]

without pushing any buttons just turn the knob anti clockwise a little bit that will reduce the overall pressure, the gain is about the consistency.

You can download the manual for it too, that will help you understand it.

[L!sa]

thank guys ll try tomorrow max is 10.. awww though its can go about 12 lol my bad

[Tangles]

thank guys ll try tomorrow max is 10.. awww though its can go about 12 lol my bad

try:

gain 10%

set gain .70

warning .90

[Krishy]

or the best thing is turn the boost controller off

it will revert to stock boost once its turned off (stock or whatever the wastegate/actuator is preset to)

but to get the boost down

i would be turning the Gain and set gain down a bit

there is a few threads on how to adjust the profec B's

good luck with it all

[L!sa]

thax for all the info... ll try to do it now.... n btw y dnt they just say PSI on there instead KPA lol

Edited March 7, 2009 by L!sa

[L!sa]

now my setting are

set 50%

gain 15%

set gain 0.70

warning 1.30

L .20

hope i did it right for 10 psi...

[Krishy]

you can change it from kPa to PSI

once it goes into psi it doesnt say 10 psi

it will say 100 and thats it

so its whatever psi multiply by 10 and thats what you see on the display

really the only way to do it is to have someone in the passengers side to keep and eye on things

and you just drive hard in 2nd or 3rd gear on a private property

[L!sa]

lol thxs lot Krishy

[Krishy]

i am glad i could help L!sa

i have the manual in english and can lend it to ya for a while

so that you can understand what each function does....

[L!sa]

i just download the manual for it but a bit hard to understand lol but now i feel my boost a bit lower n i hope my setting are right, dnt wanna blow my stock turbo

[The Bogan]

I wouldnt touch the settings if you not 100% sure what your doing, just turn it off.

[L!sa]

yea thats wat my friend said too but if i turn it off thats mean just boost as stock right?

[L!sa]

sorry im sound hell newbie on boost controller thing lol

[JMW]

I've got the same deal, i just set the warning to 10.5 and everything on 0 until i can get it set on a dyno. Or i might just go an RB20 actuator and bugger the whole lot off.

[Moodles2]

do R34 GTTs have the boost pressure guage in millilitres of mercury per gram(or kg?).. 10psi should read about 75% between 0 and +7 (roughly 13.4psi)

[L!sa]

my one gtt but missin the 3 boost gauge...got just the flat ugly top like non turbo... i think japanese stole it while in the japan auction lol jks

[L!sa]

so shud i change the set from 50% to 75%? damnnnnn im so suck about boost control still savin money for power fc

[FLN75S]

Have you tried turning the knob on the right side of the boost controller and if so what percentage does it read as this is needed to be turned down also to reduce the boost. Also if it is the standard computer and turbo the max you would want to run is 10psi mainly because you are likely to hit boost cut if you try running anything higher.

Also have you been able to change the settings so it reads PSI? if so what does it say your running on hard acceleration?