over boosting??

andy23210 · 02-15-2008, 09:35 AM

i have owned my 1995 impreza wrx sti for 6 months and ive just started to modify. bought and fitted, hks induction kit, full s/steel exhaust up to manifold, and dump valve. but my cars over boosting im told. when i put my foot down hard my car cuts out around 5-6 rpm just for a second. i was told its running 15psi and shudnt be that hi? do i need a re-map? can some1 please help!!
andy

STI_Mike · 02-15-2008, 09:37 AM

do you have any sort of EM? if not you should get on that

Garo666 · 02-15-2008, 09:41 AM

Quote:

Originally Posted by STI_Mike

do you have any sort of EM? if not you should get on that

+1
And 15psi is'nt considered overboosting I dont think... thats a little over 1bar.
Do you have a Boost Gauge?
But non the less you need some engine management.

andy23210 · 02-15-2008, 09:56 AM

Quote:

Originally Posted by STI_Mike

do you have any sort of EM? if not you should get on that

i'm not sure what an EM is mate?

Gibbs · 02-15-2008, 10:00 AM

Quote:

Originally Posted by andy23210

i'm not sure what an EM is mate?

Engine management such as a Cobb Access port ect...

andy23210 · 02-15-2008, 10:04 AM

Quote:

Originally Posted by Gibbs

Engine management such as a Cobb Access port ect...

dont have anything like that? im not sure, engine is completely standard except for mods stated before? n ogauges or anything like that just standard?

andy23210 · 02-15-2008, 10:06 AM

Quote:

Originally Posted by Garo666

+1
And 15psi is'nt considered overboosting I dont think... thats a little over 1bar.
Do you have a Boost Gauge?
But non the less you need some engine management.

no em, no gauges or anything like that? what you recommend for engine managment?

V8Huntr · 02-15-2008, 10:07 AM

Subarus don't take too well to modifications while running on the base map. A map is basically what your ECU uses to control air/fuel ratios, timing, etc. When you do modifications like an intake, exhaust, or uppipe you are going beyond what the ECU can manage so it would need to be re-tuned. For the newer WRXs and STis there is a wealth of engine management tools available. For a 95 STi you may have to go to a tuner and have it done professionally.

BTW do you have any pics of the car??? Is it a JDM STi? Or is it a 95 Impreza with a new STi motor??

andy23210 · 02-15-2008, 10:12 AM

Quote:

Originally Posted by V8Huntr

Subarus don't take too well to modifications while running on the base map. A map is basically what your ECU uses to control air/fuel ratios, timing, etc. When you do modifications like an intake, exhaust, or uppipe you are going beyond what the ECU can manage so it would need to be re-tuned. For the newer WRXs and STis there is a wealth of engine management tools available. For a 95 STi you may have to go to a tuner and have it done professionally.

BTW do you have any pics of the car??? Is it a JDM STi? Or is it a 95 Impreza with a new STi motor??

yeah ive been told that i prob got to go to pro tuner. no pics yet. its a 95 sti with a version 3 sti engine (96-97) get some pics soon. thanks for the help mate

***Seppo*** · 02-15-2008, 10:22 AM

where you from?

***snorky*** · 02-15-2008, 11:14 AM

i would assume australia. you are describing over boosting and fuel cut. Get the car tuned for your mods.

dkmn · 03-12-2008, 08:11 PM

Just to clarify, since this happened recently to me with my first re-flash... "boost cut" issues refer to the ECU cutting fuel flow to prevent damage due to it's assessment of over-boosting.

Probably safest to visit a tuner or other professional.

Otherwise, you could get a Tactrix cable, download Enginuity, and start logging. But, on the other hand, you still should have access to someone who can help with troubleshooting. Unless you're really patient and curious

subi4justin · 03-12-2008, 08:30 PM

02-15-2008, 09:35 AM	#1
andy23210 Amateur STI Driver Fav Mod: Coming Soon Posts: 11 Join Date: Feb 2008 Trader Rating: (0)	over boosting?? i have owned my 1995 impreza wrx sti for 6 months and ive just started to modify. bought and fitted, hks induction kit, full s/steel exhaust up to manifold, and dump valve. but my cars over boosting im told. when i put my foot down hard my car cuts out around 5-6 rpm just for a second. i was told its running 15psi and shudnt be that hi? do i need a re-map? can some1 please help!! andy This ad is not endorsed by this member. Please register or login to hide this ad.

02-15-2008, 09:37 AM	#2
STI_Mike S204 Racer Car: 05 Aspen White STI Fav Mod: Defi Gauges Location: Laguna Niguel,Ca Posts: 2,920 Join Date: Jul 2006 Trader Rating: (4)	Re: over boosting?? do you have any sort of EM? if not you should get on that

02-15-2008, 10:07 AM	#8
V8Huntr Spec C Club Car: 04' WRB STi Fav Mod: TBE Location: Allentown, PA Posts: 1,600 Join Date: Sep 2006 Trader Rating: (0)	Re: over boosting?? Subarus don't take too well to modifications while running on the base map. A map is basically what your ECU uses to control air/fuel ratios, timing, etc. When you do modifications like an intake, exhaust, or uppipe you are going beyond what the ECU can manage so it would need to be re-tuned. For the newer WRXs and STis there is a wealth of engine management tools available. For a 95 STi you may have to go to a tuner and have it done professionally. BTW do you have any pics of the car??? Is it a JDM STi? Or is it a 95 Impreza with a new STi motor??

02-15-2008, 10:22 AM	#10
*Seppo* No Rice Car: 06 OBP STi Fav Mod: Brake dust Location: Jersey Posts: 634 Join Date: Sep 2007 Trader Rating: (1)	Re: over boosting?? where you from?

02-15-2008, 11:14 AM	#11
*snorky* Teh Other White Meat Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,686 Join Date: Apr 2006 Trader Rating: (22)	Re: over boosting?? i would assume australia. you are describing over boosting and fuel cut. Get the car tuned for your mods.

03-12-2008, 08:11 PM	#12
dkmn Silver Member Car: Blue 06 WRX STi Fav Mod: Coming Soon Posts: 3 Join Date: Nov 2007 Trader Rating: (0)	Re: over boosting?? Just to clarify, since this happened recently to me with my first re-flash... "boost cut" issues refer to the ECU cutting fuel flow to prevent damage due to it's assessment of over-boosting. Probably safest to visit a tuner or other professional. Otherwise, you could get a Tactrix cable, download Enginuity, and start logging. But, on the other hand, you still should have access to someone who can help with troubleshooting. Unless you're really patient and curious

03-12-2008, 08:30 PM	#13
subi4justin Professional STI Driver Car: OBP 05 STI protuned Fav Mod: HKS EXHAUST Location: BAy ARea Posts: 440 Join Date: Apr 2007 Trader Rating: (0)	Re: over boosting?? This ad is not endorsed by this member. Please register or login to hide this ad.