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Old 10-18-2019, 12:45 PM   #1
Martin4482.rm
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Default 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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Old 10-18-2019, 02:14 PM   #2
hybrid gti 2
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Location: (818) 300k+ ej205 ppg 5mt
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silver and cf

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Check exhaust parts. Uppipe could be cracked. Turbo could be toast.
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Old 10-18-2019, 04:28 PM   #3
Martin4482.rm
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Quote:
Originally Posted by hybrid gti 2 View Post
Check exhaust parts. Uppipe could be cracked. Turbo could be toast.
Swaped a used turbo on same issues
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Old 10-18-2019, 04:44 PM   #4
hybrid gti 2
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02 vf30 pnp wagon
silver and cf

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But is the turbo spinning and have little work no play, when you installed it ?
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Old 10-18-2019, 05:01 PM   #5
Martin4482.rm
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Originally Posted by hybrid gti 2 View Post
But is the turbo spinning and have little work no play, when you installed it ?
Yes it was in good working condition zero shaftplay
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Old 10-19-2019, 02:08 AM   #6
subaru_gc8
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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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Old 10-19-2019, 09:18 AM   #7
Martin4482.rm
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Originally Posted by subaru_gc8 View Post
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
I'll give that a shot and let you know thanks
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Old 10-19-2019, 09:14 PM   #8
Martin4482.rm
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Took vac line off wastegate gate same thing
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Old 10-19-2019, 09:30 PM   #9
hybrid gti 2
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02 vf30 pnp wagon
silver and cf

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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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