anfitch2k5
02-25-2010, 07:04 PM
i just had my ecu tuned from enthalpy, no bad words for them. everything went smooth, heres my problem. tuned for s13 black top 740 cc inj, s15 turbo, fmic, exhaust, intake, z32 maf and a isis intake manifold. when i got the ecu back i put it in the car but the car had yet to have the intake manifold on it, i was running the stock manifold still but it still pulled great and put down 278hp on 18psi. i finally got the intake manifold on with all new gaskets, install went flawless no problems at all. at first it kinda sputtered under boost, afr gauge still said i was below 11.0 so i changed the plugs, re gapped, same thing. messed with the fuel regulator, nothing changed, adjusted the timing both retard and advanced, nothing changed. im just stuck with possibilities. i got in to drive it today after checkin for boost leaks and now all of a sudden it doesn build boost anything over then stock. just falls on its face after 7psi. i can run 7psi smooth but its slow as dirt ya know? lol could it be a wastegate problem? something else i can look into? it seems like the intake manifold was bringing in more air ofcourse but enough to blow out spark when plugs are new and regapped to .028? could it be ignition coils?
any help or info would be greatly apprechiated. i searched online and everything kept coming up spark plugs.
thanks alot in advanced!
any help or info would be greatly apprechiated. i searched online and everything kept coming up spark plugs.
thanks alot in advanced!