i have been getting a random misfire code for a couple of mths now. It started happening after i installed (uppipe, boost controller, clutch and flywheel) i dont see why any of these things would cause this problem. I would like to hear any comments or better yet cause and fix????? i have changed the fuel pump, plugs and disconnected the utech to try and resolve the problem...

 

How many miles on your car? Might be a coil pack going bad.(happened to me). They are easier to change than the plugs.

 

The car has 80000 on it. However i believe that if the problem was the coil pack then the code would be confined to those cyclinders all the time. the problem is that the code is for a different set of cycliners all the time. When the code is cleared it comes back withing a couple of hrs. How did you check your coild pack?

 

Ohh, well my cel code was specifically for cyl #3 so it was pretty easy. But it was around 80,000 when mine went out. Those Utecs are tricky, I used to have 1 and had all sorts of issues, then switched to a ECUTEK reflash and didn't have many problems. Did you tune your utec yourself?

 

Ive got random misfires too...act light flywheel, 3" turboback catless, catless uppipe, cai, perrin crank pulley, and greddy bov. I think the lightweight flywheel and crankpulley might play a part in random misfires, but not 100% about that. Im about to get a computer in about 2 weeks, so hopefully i can resolve the issue w/ that.

 

It's the flywheel in both cases.