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Old 08-24-2018, 05:32 AM   #1
MeechWRX
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Member#: 487746
Join Date: Jun 2018
Default Low boost

I drive a 2002 WRX and since Iíve had an AP my car hasnít been hitting target boost. I feel like Iíve checked everything there is to check and Iím still only hitting 11 psi at most. I have been running Cobb stage 1 91 map since I got it back in May and I havenít hit target boost once since then. I have new gaskets from the exhaust manifold to the downpipe, new intercooler hoses, silicone hoses, Cobb bcs. Iím waiting on a new turbo inlet and post maf hose to see if they might fix the issue. I donít have the money to take it to a shop right now so Iím trying to figure this out myself.

Also, I tried removing the BCS line going to the WG to see if I would hit target boost and I actually made <0 boost. Not sure what this means but it definitely seems off. Somebody help please Iím tired of driving a slow Subaru.
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Old 08-24-2018, 05:39 AM   #2
Cdextraze
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Member#: 424221
Join Date: Jun 2015
Chapter/Region: NESIC
Location: RI 401
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1997 Outback imprez
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Quote:
Originally Posted by MeechWRX View Post
I drive a 2002 WRX and since Iíve had an AP my car hasnít been hitting target boost. I feel like Iíve checked everything there is to check and Iím still only hitting 11 psi at most. I have been running Cobb stage 1 91 map since I got it back in May and I havenít hit target boost once since then. I have new gaskets from the exhaust manifold to the downpipe, new intercooler hoses, silicone hoses, Cobb bcs. Iím waiting on a new turbo inlet and post maf hose to see if they might fix the issue. I donít have the money to take it to a shop right now so Iím trying to figure this out myself.

Also, I tried removing the BCS line going to the WG to see if I would hit target boost and I actually made <0 boost. Not sure what this means but it definitely seems off. Somebody help please Iím tired of driving a slow Subaru.
My first tip would be to start running 93, second did you have a boost guage in the car to tell you what you were hitting before that? And third get a protune instead of using the Cobb OTS maps
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Old 08-24-2018, 06:00 AM   #3
MeechWRX
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Default

Iíll have to look around for 93 but how will that help with low boost? I didnít have a boost gauge, but Iím sure it was boosting fine before I re-tuned because it actually felt faster and did pull harder. I have plans to get a protune but with mods I can afford down the road, I was hoping the AP would make my car more fun but itís just been depressing to drive it
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Old 08-24-2018, 10:15 PM   #4
MeechWRX
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Bump.
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Old 08-26-2018, 02:09 PM   #5
MeechWRX
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If anyone seeing this was wondering, I pulled the WGDC logs on my AP and found that my wg only cycles at 51% at WOT... so Iím losing pretty a chunk of boost and Iíve decided to just buy a used TD04 and pray for the best. Iíll report back for anyone that might be reading this LOL
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