500hp

4GTuner

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I dunno, I dont know the ins and outs of a vr4 harness. I sure your ecu plugs are different and afm is different plugs. Not sure what else. Im not a guru on this. Im going for a evo9 ecu, but not in a vr4.

I think your afm is too small as well. Either evo 7-9, maybe evo 1-3 or speed density.
 
I have been heading in the same direction recently... my aim is 250kw atw. If I were you, i'd go:

-ECM Link on single board VR4 ECU
-Bigger injectors (Injector Dynamics 1050cc+)
-1:1 Adjustable fuel pressure regulator
-New fuel filer
-E85 fuel pump (i'm using a DeatschWerks DW300 from VPW)
-External wastegate to control 25+psi
-A good clutch
-A good tuner


That is assuming you have all the other basic stuff sorted like exhaust, intake, cooler piping and a healthy engine etc.

Also- did you get your cams dialed in with some cam gears?
 

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