KR on any throttle tip in

[lwrs10]

2007 Coblat SS, bone stock. About to pull the trigger on a pulley and 60's, datalogging to make sure everything is ok before I do. First thing I found was 180-200 degree IAT2 temps......intercooler pump was dead. Fixed that, and still has one big problem.

On any throttle tip in, it get KR. About 8%. It is just for a split second. Any RPM, any condition, etc. Worse at lower RPM like taking off from a stop sign.

Is this normal? Or is something broke?

I added 2 log files....one MAF and one with MAF failed/VE.



MAF_Cobalt.hpl
VE_Cobalt.hpl

[Freakotec]

Post up the log

[lwrs10]

Post up the log

forgot to save one.....i will log one tomorrow.

[lwrs10]

Ok...found its going super lean on any quick throttle snap. I can see it on the narrow band, and on my wide band. Like leaner than 18:1. Never goes lean on slow throttle inputs....just quick ones. I will post a log as soon as I can.

[lwrs10]

added logs!

[cobaltssoverbooster]

is your pe acceleration rate set to 2?

[lwrs10]

is your pe acceleration rate set to 2?

not sure.....its bone stock.

But I did figure it out. It was the Burst Knock Retard table. For some reason it is different than the typical LS1 style tune....it will show any timing the computer pulls as KR. I zeroed out that table today and no more KR. Drove it pretty aggressive too...not even a hint of KR on tip in.