Tremek Car Video Forum

musk! · 21 Feb 2008, 11:36 pm

Hi there my mate has a 97 Galant VR4 sedan 5speed manual. It is currently boosting 7 pound as of standard. The problem is that when it gets between 6-7k rpm it dies off quite a bit.. it's pretty weird cos I can also smell alot of unburnt fuel when i get that high in the revs aswel. Not really sure on what it could be.

The only modifications are bov, fmic, pod filter, and boost tap which is wound right out so no added boost.

Someone told me it could be the coil packs? but I haven't really had the time to have a look yet as my engine is a mother****er to work on. So im here wanting to eliminate the process of trial and error

Any help would be greatly appreciated.

bam 240sx · 22 Feb 2008, 04:20 pm

is there a check engine light on or a ratteling noise?

check the exhaust manifold from the block and to the turbo, the bolts can loosen once and a while

Turbo AWD · 22 Feb 2008, 08:45 pm

A boost leak test is highly recommended. Also maybe a dead o2 sensor.

Drizzle · 03 Mar 2008, 08:40 pm

Check: AFM(BOV making it run rich/unburnt fuel) or MAF(should be fine), slight exhaust leak/warped/cracked mani.? Good luck!

Mr Void · 16 Apr 2008, 04:16 pm

Quote:

Originally Posted by Turbo AWD

A boost leak test is highly recommended. Also maybe a dead o2 sensor.

Why would it be the O2 sensor? Don't they send signal to the ecu only on idle?

97talon · 17 Apr 2008, 05:17 am

And some cars don't hold full boost all the way to redline.

21 Feb 2008, 11:36 pm	#1 (permalink)
musk! Regular Tremekian Join Date: Jun 2005 Location: BOOSTIN WITH YOUR MUM Posts: 154 musk!'s Gallery	boost leak? Hi there my mate has a 97 Galant VR4 sedan 5speed manual. It is currently boosting 7 pound as of standard. The problem is that when it gets between 6-7k rpm it dies off quite a bit.. it's pretty weird cos I can also smell alot of unburnt fuel when i get that high in the revs aswel. Not really sure on what it could be. The only modifications are bov, fmic, pod filter, and boost tap which is wound right out so no added boost. Someone told me it could be the coil packs? but I haven't really had the time to have a look yet as my engine is a mother****er to work on. So im here wanting to eliminate the process of trial and error Any help would be greatly appreciated.

22 Feb 2008, 04:20 pm	#2 (permalink)
bam 240sx Senior Tremekian Join Date: Sep 2006 Location: Erie Pa Posts: 1,600 bam 240sx's Gallery	Re: boost leak? is there a check engine light on or a ratteling noise? check the exhaust manifold from the block and to the turbo, the bolts can loosen once and a while

22 Feb 2008, 08:45 pm	#3 (permalink)
Turbo AWD Fanatic Tremekian Join Date: Jan 2006 Location: LAT:42.08 LON:80.18 Posts: 711 Turbo AWD's Gallery	Re: boost leak? A boost leak test is highly recommended. Also maybe a dead o2 sensor. __________________

03 Mar 2008, 08:40 pm	#4 (permalink)
Drizzle Fanatic Tremekian Join Date: Jan 2005 Location: Earth Posts: 733 Drizzle's Gallery	Re: boost leak? Check: AFM(BOV making it run rich/unburnt fuel) or MAF(should be fine), slight exhaust leak/warped/cracked mani.? Good luck!

17 Apr 2008, 05:17 am	#6 (permalink)
97talon VIPER>ZR1 Join Date: Feb 2005 Location: Laconia NH Posts: 20,696 97talon's Gallery	Re: boost leak? And some cars don't hold full boost all the way to redline.

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