Misfiring Issue

[chetvram]

I had recent had the problem of my car wanting to Misfire from 4500rpm on up. I didn't always do this. I have swapped out the plugs, wires, and coil pack. AFR is around 11.2 and I have a green top CAS. Help me out guys.

 

[hiimt0ny]

What kind of spark plugs are you using?

 

[chetvram]

ngk 6s

 

[Loewen21]

well i don't know what kind of boost numbers you are running, but just by looking at your profile i would say that your plugs are getting too hot and going off early. Switch to something a step colder, 7es for example.

 

[chetvram]

I'm actually running 20psi now. Can I lower the gap on the plugs instead of buying new ones since I just bought some 6s?

 

[Loewen21]

not 100% sure but i don't think it would work too well, mayb a little bit less misfiring but the wrong gap might make it run worse. i would say get 7s, but that's just my .02

 

[chetvram]

I'm running the NGK 7s at .28 gap and I am still having the same issure it happens when I'm more into boost but I can run it up with low throttle and not have any misfiring. I think it happens when the wastegate(tial38) opens. Has anyone else had a similir problem?