Forced Induction Custom FI Setup Questions

Boost don't come till around 3.5-4k

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Old 03-17-2004, 08:15 PM
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Default Boost don't come till around 3.5-4k

Is this normal cause I've been reading that other people started spooling at like 2-3k. Now this is what you call lag. Feels like vtec area that it's coming in at. I'm using a wrx turbo and 2.25 piping for exhaust(yeah I know...)dsm side mount with 1.75 to 2" piping for charge piping. What gives?
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Old 03-17-2004, 08:21 PM
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Default Re:Boost don't come till around 3.5-4k

Any idea of the specs of that turbo? Like what size AR it is and what size turbone your running?
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Old 03-17-2004, 08:26 PM
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Default Re:Boost don't come till around 3.5-4k

tha damn charge pipes are too big, go with what is off of the turbo, and put the wastegate hose right before the throttle body.
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Old 03-17-2004, 08:56 PM
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Default Re:Boost don't come till around 3.5-4k

errr, I think you want the wastegate line somewhere AFTER the throttlebody... ie the intake manifold, fuel pressure regulator line. etc.
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Old 03-18-2004, 01:44 AM
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Default Re:Boost don't come till around 3.5-4k

Originally Posted by ghettoturbo
Originally Posted by tranceminister
errr, I think you want the wastegate line somewhere AFTER the throttlebody... ie the intake manifold, fuel pressure regulator line. etc.
anywhere after the ic would have pretty much the same reading i bet

No its not the same. You NEED to take the vaccum source from the manifold, its a stronger vaccum source.
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Old 03-18-2004, 01:48 AM
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Default Re:Boost don't come till around 3.5-4k

I took my wastegate boost right off the partial charge pipe that's on the turbo.
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Old 03-18-2004, 01:59 AM
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Default Re:Boost don't come till around 3.5-4k

Originally Posted by firewolf23
I took my wastegate boost right off the partial charge pipe that's on the turbo.

Yeah some wastegates are setup for this and thats perfectly fine, however the best vaccum source is the manifold. IMO
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Old 03-18-2004, 10:11 AM
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Default Re:Boost don't come till around 3.5-4k

WG needs vacuum?

I know it reads boost, but vac?
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