Those of you that are familar with this engine, I have a couple of questions. First off the car has the stock tune and minor bolt-ons.
The engine has idled randomly rough since day one. Deaerlship said no codes were set so nothing is wrong. Idle is most rough, when the engine is first started in the a.m. and when I think it's swithcing from OL to CL. It also idles rough aftter getting off of the hiway and having to sit a a red light. RPMs will fluctuate quite a bit and then settle down.
I did a bit of scanning yesterday and noticed a lot of random misfires across all cylinders. It does this at idle, a lot at decel, and some at cruise. Although at steady cruise there is almost no misfires. I'm not feeling the misfires though.
I'm new to the LS3 and am wondering what is normal before commiting to tuning.