Quote:
Originally Posted by LiqTenExp
Have your reviewed your virtual torque tables and made sure they aren't demanding way more than they should be when you have this issue?
I recently had an issue with this where around 4k rpm every time I'd get a solid MIL and misfire code. I realized a prior change I had made in error buffed my tables up in that area and I had to pull them back down. It was forcing the throttle body wide open in these areas even though throttle position shouldn't have demanded it (that is actually what caught my eye in the log and made me realize my virtual torque tables had a mistake in that area).
If that isn't the issue..................................
I'm on stock coils and plug wires in the 800whp range. The fancier ones shouldn't be worse but feel free to switch back to stock and know they are sufficient to eliminate them. Make sure the contacts wtihin your coil pack connectors don't have broken locks. Take each plug off and make sure that you can't pull the wire out the back of the connector. If you can, you found a problem. I actually had this happen on cylinder #7 on my car. I was chasing plug wires and coil packs and eventually found the harness issue after swapping them around didn't fix it.
What do your knock tables look like?
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Great info! I will check/confirm what you mentioned! Thanks