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10-18-2019, 11:45 AM | #1 |
Scooby Newbie
Member#: 507519
Join Date: Oct 2019
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Car wont build boost
Hey guys subie newbie here I bought an 04 blob eye with this issue and cant sort it out.
Ok so car runs completely fine pre boost as soon as it gets into boost the car falls on its face and spit out black smoke it will hit about 3psi then shutters bad if I stay in the gas it will build to abput 7psi tons of work done recently plugs ngk copper gapped at .30,coilpacks, fuel pressure regulator, new turbo inlet, used td04, new downstream 02, new fuel filter, Mods list Perrin uppipe Cobb downpipe AEM intake Cobb ap v3 Cheap catback Aftermarket radiator Aftermarket turboinlet Tein lowering springs All new grimspeed couplers Grimspeed y pipe <back of intercooler> I'm really stumped on this any information is greatly appreciated thanks in advance
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10-18-2019, 01:14 PM | #2 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
Check exhaust parts. Uppipe could be cracked. Turbo could be toast.
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10-18-2019, 03:28 PM | #3 |
Scooby Newbie
Member#: 507519
Join Date: Oct 2019
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10-18-2019, 03:44 PM | #4 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
But is the turbo spinning and have little work no play, when you installed it ?
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10-18-2019, 04:01 PM | #5 |
Scooby Newbie
Member#: 507519
Join Date: Oct 2019
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10-19-2019, 01:08 AM | #6 |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
take the wastegate vacuum line off and see if it boosts okay, if it does, then you problemn is the ebcs.. make sure you dont over boost
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10-19-2019, 08:18 AM | #7 |
Scooby Newbie
Member#: 507519
Join Date: Oct 2019
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10-19-2019, 08:14 PM | #8 |
Scooby Newbie
Member#: 507519
Join Date: Oct 2019
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Took vac line off wastegate gate same thing
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10-19-2019, 08:30 PM | #9 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
Get a OEM replacement unless your going to do a tune with a 3 port. As the 3 post is not safe to boost on until they are tuned. I might have an OEM for an 02. Realize they are different for different years. The plug is different.
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11-23-2019, 05:55 PM | #10 |
Scooby Newbie
Member#: 452713
Join Date: Aug 2016
Chapter/Region:
Tri-State
Location: Central jersey
Vehicle:02 Impreza WRX Grey |
Could be wastegate. When I got my 02 I couldn’t boost more then 5psi and it would fall on its face at 4500rpm put a new turbo on and the issue was gone
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11-23-2019, 09:09 PM | #11 |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
take the wastegate vaccum line off and see if it boosts. if it does, its your ebcs or something in that line, if it doesnt, than its mechanical and there is a leak somewhere. also did you change all the coil packs> did you use oem or aftermarket?
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11-24-2019, 08:45 PM | #12 |
NASIOC Supporter
Member#: 132
Join Date: Jul 1999
Chapter/Region:
Tri-State
Location: Cold in winter, hot in summer
Vehicle:GDA- D, GDA-A, VAG-A GDA-A - ShinjiTuned |
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11-29-2019, 05:22 PM | #13 |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
Last edited by subaru_gc8; 12-05-2019 at 12:31 PM. |
12-03-2019, 11:55 AM | #14 |
Scooby Newbie
Member#: 507853
Join Date: Oct 2019
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having the same issue, patiently waiting for some more ideas! Good luck
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