I'm having trouble troubleshooting the cause of a light throttle surge. I have a surge coming to a stop too- won't die but loses too much RPM then overshoots which may be related, but i haven't tackled that yet. I thought that might be torque tables, but I don?t understand those relationships ? yet. It looks like something is pulling timing, but I don't understand how to determine what to look at next. I've tweaked the torque tables, knock sensors, and only God knows what else; at this point, I'm just chasing my tail.
We're working on a 2012 Avalance with the following setup.
New GM L9H crate engine with stock internals. I'm at 2,000 miles on the new 6.2. Originally I tuned it and was running great NA but some kind of sickness hit me, and I installed an Edelbrock E-Force Stage 1 kit. I've used part of Edelbrock's tune for ( was MAF only) but I've tuned and enabled VVE and MAF.
6.2. L9H stock internals
E-force @ 6lbs
Shorty headers
High flow cats and Borla exhaust
Edlebrock Injectors with their data
2-bar Bosch Edlebrock scaling data.
3.73 gear
I was running 93 Octane with a bottle of octane booster for the attached log.
Thanks.
Avalance Log.hplRunning Tune w-Eforce.hpt