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Discussion Starter #1
ok so current mods are:
Accessport with vf34 91 map
helix downpipe
565 pinks
sti fuel pump
aem intake
vf34
i finally got rid of that damn bov.
Exedy clutch ( i know it doesnt really matter)

Ok so the car acts fine in first up to 3k rpms then it stops accelerating and just starts knocking like crazy at 14 psi
2-5 gears it gets to 4.5k rpms and does the same thing.
it kinda feels like the car wants to cut fuel and not turn of the boost.

Anything i should change or add cause im kinda outa ideas right now thanks a ton.
 

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Is this a new setup or were the mods installed previously and working before?
 

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I would seek Cobb's suport. They sould be willing to help. I would imagine it is very difficult to have OTS maps for these sorts of mods. Just because it should work doesn't mean it will. If Cobb can't help get the car to a tunner.
 

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put the stock intake back on, it might be the AEM intake skewing the MAF readings
 

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Did you do the installation? I'd start by trouble shooting the fuel system, but others may have better advise.
 

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Have you tried the California 91 octane map? I cannot recall if one exists, but it's worth a shot. You could try logging too! Have you changed the stock TMIC too?
 
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