I just had my car scanned and found I have misfires on a couple cylinders (don't know what ones right now) and lots of knock. I'm pretty sure I know what's causing the knock. but what could cause the misfires? I just changed out my wires for taylor 8mm. but what are other probable causes for misfiring? This is all since my Lt's install. just to throw that in.

I also shouldn't be happy. but I only ran a 13.8 at 99.9 and thought I had a factory dud. so this should be the blame!

 

burnt wires, bad opti, coil, module, bad plugs, coil wire

 

so what do you think is causing the knock???

 

most likely the headers are to blame

 

well my car has been acting up since my headers too. I also have a lt4 km but i think my opti has hit the crapper and is to blame for my trouble

 

I hope my opti hasn't crapped out at 60,000 miles . I'm gonna change my plugs this weekend and do a PCMforless tune. I just hope that's it. my luck it's the opti