i think there is something wrong with my car... 3rd, 4th gear seem to never go past 5k rpm. when reving in netrul it will go to redline. but while in gear and accelerating, it wont go past 5k... any ideas what could be wrong??

not to mention that i feel a lot of lag in the high end power... low end seems fine.

 

dude i am having the same problem with my car and i have checked a lot of stuff. fuel pressure, intack track, maf, fuel filter, clogged cat, aiv, ignition timing, wires, plugs, battery/chassis ground. still i cant find the problem HELP

 

yeha i havent solved the problem yet... but i think my cat is clogged.. when i rev i hear crap rattling in the cat i think. but friends have told me it could be fuel filter or leaking vaccum tubes or something.... im gonna try yo fix my cat, or get a new one, ill keep u posted...