problems with 1999 sti ra

[ginganinja]

wondering if anyone can guide me in the right direction as to what may be wrong with my car.

it is missing a bit when cruising normally at 60km/h but when you load it up in third at about 4000rpm the boost drops back and it feels like it is being strangled until about 6500rpm and it opens up again. its right where all the torque is and it should start pulling hard. real pain in the arse when coming out of corners

mechanically it seems fine there is no smoke, and it idles fine, i have spaced spark plugs to 0.65 and the car is standard so not too sure where to start.

anyone got any ideas as to what it may be?

cheers.

[Guest]

Any codes?

[ginganinja]

what codes are you after?

[Guest]

Check engine light codes lol.

[Guest]

Definitely sound like an ignition issue. Check plugs and coil pack

[Guest]

Borrow an afm next meet see if it helps. $130 odd genuine aftermarket are worth more as they buy em off genuine lads. Or could be knock sensor on its way out.

[Guest]

Vac leak?

[ginganinja]

engine light isn\'t on, plugs are brand new ngk platinums and spaced to 0.65, haven\'t checked coil pack or afm yet. don\'t have much time during the week to check it out so i mite just drop it down to possum bourne motorsport and get them to check it.

could it be a fuel pump problem or would that be different?

[Koom]

Fuel pump\'s generally just don\'t start when they are on their way out. Then if you give it a whack, it\'ll run fine for hours as long as it doesn\'t stop.

Does sound ignition\'y but it is quite possibly the ECU and as evowrx mentioned, you should check for codes.