R33 Running Sus

[JET-25L]

Hey i've got a 96 SII R33 gts-t 5 speed. Got 90 000kms on it and basic mods.. splitfire coil packs, k&n filter, boost controller on 9 psi, 34 cooler and stock exhaust.

Problem is ever since ive got it.. even before i did the above mods, every now and then i put my foot down and the boost goes up on the gauge.. turbo's spooling.. cars revving.. but it's not going anywhere:s well it is just really really slowly.. much slower than it's suppose to. I would say it's something to do with the air/flow meter or a boost leak or something but don't know where it could be coming from.

Kind of jerks a bit when it does it too.. could it be misfiring? It kinda feels the same as when i let it rev 5000rpm + just kinda makes noise but doesn't do anything. Hard for me to tell if its misfiring as the factory exhaust is so quiet and whenever i go to show someone else it doesn't do it:@

Anyone experienced this or got any recommendations?

Thanks.

[Strik3r]

your stock exhaust is very restrictive and probably stopping you from making much power.. get an aftermarket exhaust with high flow cat and you'll know about it.

as for whether or not there is a problem.. if you say the car is revving and not going anyway, i'd be suspect on the clutch slipping perhaps ???? if it was missfiring / boost leak / AFM you'd notice fluctuations in the revs. if the revs appear to be normal, then i'd guess its the clutch or something in the drive train.

[LatinR33]

spot on!!! get rid of the stock exhaust get a nice free flowing turboback and enjoy the whiplash hehehe.

[JET-25L]

yeah i've got a new heavy duty clutch. the revs dont shoot through the roof they continue climbing just slower with occasional slight jerk.. sorry i can't really explain it better than i have:s

yeah im going to get the full exhaust when i get tax back fingers crossed it wont still be doing it but seems liek it's something electrical or boost related to me.

fingers crossed the exhaust is a noticeable difference as well lol.

[Adriano]

Fuel pump is another likely suspect

[Guest 40th-edition]

man, have you checked your spark plugs?? could be fuel pump, could also be blocked cat? check if your AFM is clean also, clean with throttle body cleaner.

cheers

[JET-25L]

new platinum spark plugs 5000kms ago.. might check them anyway though. Haven't thought about fuel pump but maybe i should swap it with another one or test it. Do they usually conk out at 90 000 though? AFM looks clean to me. Due for a timing belt service soon maybe i should get them to look at it if i haven't fixed it by then.

[PM-R33]

Get the exhaust steve and that should help, can't even hear your car when you pull up

[joeyjoejoejuniorshabadoo]

full exhaust - gap plugs