Needs Some help 2012 Camaro SS

[jstatham]

Hello everyone. I have a 2012 Camaro SS with 39k miles. It is tuned no cats, headers, exhaust, 495 rw hp. The shop that did all the work is no longer in business. I have started noticing a slight miss while cruising. It almost like a skip. If I get on it it doesn't happen. I just put new plugs it in and it didn't help. I am not getting any codes. Where should I look next. All the plugs looked good except for cylinder #6 and #8. Any help would be greatly appreciated.

[CamaroDreams76]

From getting it tuned, to you noticing a problem..... how long has that been?

Few things I have a question about. If it's the mods you mentioned, why are you running TR6s? You should still be on TR5s. Also 495rwhp is incredibly high for just headers. That's cam numbers.

Cylinders 7 and 8 typically get deprived of fuel. So you may want to check injectors for cleanliness. No reason they should be that black

If tuning is in question, get it checked by Vengeance Racing. They're in Cummins GA

[jstatham]

Originally Posted by CamaroDreams76

From getting it tuned, to you noticing a problem..... how long has that been?

Few things I have a question about. If it's the mods you mentioned, why are you running TR6s? You should still be on TR5s. Also 495rwhp is incredibly high for just headers. That's cam numbers.

Cylinders 7 and 8 typically get deprived of fuel. So you may want to check injectors for cleanliness. No reason they should be that black

If tuning is in question, get it checked by Vengeance Racing. They're in Cummins GA

I do have a cam I for got to mention it. It has been tuned since I bought it 5 years ago and never had an issue. I just replaced the plugs with that was previously installed. I haven't even put 12k miles on it since I have bought it.

[jstatham]

Anyone Else?

[The_bald_eagle_machine]

I had a weird and random misifre type issue... Turns out my MSD wires weren't firing on all cylinders. First it was a small pinging type noise.... then it was a random CEL that would come on and off... Then it was complete ignition failure. replaced the plugs, didn't fix it. Replaced the wires with acdelco parts store wires and it ran like a scalded ape again. Its a cheap maintenance type issue that can cause alot of issues. I would start there... Wires are only $50-60.

[jstatham]

I will give that a try thanks.