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car spikes to 22psi ... what to do ...?

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ALLeyesONmyGSX

15+ Year Contributor
138
0
Jun 9, 2004
Los Angeles, California
i have an intake, dejon tool hard intake pipe - - - N1 exhaust, N1 downpipe, profec B specII electronic boost controller, S-AFC, denso 660cc injectors, VR-4 (3kgt) fuel pump, Ported o2 housing, ported exhaust manifold, ported evoIII turbo . . . running on 100 octane . . . what can i safely boost, and what should i drop the clutch at ? (shooting for 12's ?) . . . on the profecB specII; i have it set at 14psi, (at this point im at about 98 octane) . . . in 3rd gear it'll hold 14 psi untill about 3.5K RPM . . . then it'll fly to 18psi at 4 at 5k about 20 and at redline about 22 . . . i dont know whats going on, ive logged everything with the data logger and messed with a AFC a bit to see what i can do - - - any ideas as to whats wrong ? . . . the boost is out of control, i dont know what to do
 
thats what I have heard about hte spec 2 greeeedy profecs... they spike, but that one is pretty bad... how big's your wastegate? Sounds like it is time for you to look into one anway. I see lots of porting down pipe big turbo ported but no wg upgrades.
 
evo3 16g at 22 psi on 100 octane makes you worry? If you've got logs then use them...see if you're knocking or if ignition timing is being pulled...if not, then there is no problem.

-T
 
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