Im having some issues with my engine. The computer wont let the car go pas 1500 rpm, and it runs fine up untill i hit 1500 rpm. As soon as i go past 1500 the car starts massivly missfiring, and wont accellerate at all... yet if i let off the gas to 1500 rpm the engine picks up and starts to accellerate again. could it be a lose rocker? but if so why would it cause this to only run at 1500 rpm, im guessing its something with the top end of the engine. if anyone knows of anything else it could be please help. thanks for any reply

 

Is it breaking up and missing real bad, if so it sounds ignition realted. Bad opti I'm thinking.

 

yeah thats what i though, and thats what i was afraid of, i really dont want to have to replace the opti right now, thats going to suck

 

Could be a clogged cat. Thats what happened to mine. Is your car noticeably quiter?

 

I am going to say opti-spark.
Something like that happened to mine. It would run at idle just fine and then once u tryed to get it to go it would sputter and stall. When I replaced opti it pulled like a beast again.

 

no the cats definatly not cloged... the things louder than hell... and yeah rampage my problem sounds ALOT like yours... not just to find someone to help with the opti... but im just wondering if it would be a better choice to switch to delteq... ive been reading up and it seems like a really good kick *** solution to the opti... any ideas??