Hi everyone I have a 2011 Camaro SS2, when I first start the car and drive no problems at any load or RPM. when the car warms up and I give it more than 1/2 throttle it frequently bogs/misfires like it cutting fuel and when you let off the throttle it will backfire sometimes. it just randomly starting doing this. there are no codes. I need some help and opinions.
More about the car
- LS3
- BTR Stage 4 cam Spec. 233/250 .618"/.596" 113+5
- Cold Air intake
- Long tube headers with high flow cats
- Straight pipe
- M6, final drive 4.10
- Tuned by PCM of NC
- tuned on air density (NOT MAF)
Things I checked & replace
- Checked spark plugs, all were good but cylinder number 2 looked like it had a leaky fuel injected.
- Replace fuel injector for cylinder #2 did not fix problem
- Replace spark plug wire did not fix problem
HP tune and log files
- File:
https://drive.google.com/file/d/1rIp...ew?usp=sharing
- Log:
https://drive.google.com/file/d/1nS_...ew?usp=sharing
(LOG of times when events were happening)
- 5:36 bog/maybe misfire
- 5:47-5:50 bog/maybe misfire
- 5:54 bog maybe misfire
- 5:56 closed loop commanded off
- 6:03 closed loop commanded on
- 6:06 closed loop commanded off
- 6:09 bog/maybe misfire
I NEED SOME HELP AND ADVICE!