Misfire Help

[TAGZO6]

Hi all,

I need some help with figuring out what is causing a random misfire at idle and slow driving (between 2 to 20 misfire count) and huge miss sometimes (200 misfire count)!.

Mods
2016 CTSV, headers with cats, roto fab big gulp, 103 TB, ported blower, upper and lower pulleys (~15 PSi), meth, chiller, 160 stat, catch can.

I took it to the dyno, and all is fine with an excellent number ~735 rwhp and the same TQ. It ran at the track; 1 and 2 runs were ok, 3rd run was horrible with ~200 misfires. And a drop of 1 sec in 1/4.

I changed the sparkplugs three times with different gapping (40,32,28), although they were fine. I checked the wires, and they were ok. I tested coils, and they were fine. I Did a leak down test, and all was fine; I took it to the dyno and made 750 rwhp and about the same TQ.. !?!?!?!?

I took it to the track; 1st and 2nd runs were ok. The same thing happened after a cooldown on the 3rd run, misfiring like crazy (in ~200 range).

Yesterday, the same type of misfire (~200) happed at 30kph cursing. It gradually faded when I leaned it to the paddle, slowed down and leaned on it smoothly, and slowly returned to the usual misfire of (~2 to 20 while driving).

I am getting confused. I don't know, but I thought VVT had a problem or DOD. maybe even the O2s are half-broken. I am unsure of what the problem is.

Can anyone help me out?

Note all misfires mentioned here are from my aeroforce gauge pod.
drag run 3.hpl
cruise 160 thermo.hpl

Cheers!

[djyankees31]

I'm not sure if my comments will help or not. But during the drag run 3, when you were getting lots of misfires in cylinder 8, your fuel status was OL- Fault and your Injector Pulse Width Averages for both banks got to 9.4ms. On my Corvette, when I'm pushing 6ms for the injectors, I start running into performance issues. I've never had a OL fault so I don't know the trigger for that unless it's caused by the injectors not able to supply the fuel when needed.

I hope you figure it out as it's a awesome setup!!