Originally Posted by
A_Texas90
That’s Logical thanks for the quick answer. As far as the codes they’re disable and have been, but being permanent they still pop up when I scan for dtc’s lol.
Main things is I’m 4 months in after them cam swap/DOD delete I’m searching deep in all avenues for the reason it keeps pulling negative timing. There’s always a caveat no matter idles with little to no lop in gear I’ll get the tune decent but heavy load or a abrupt stop or after I write minor adjustments nothing torque related it will immediately go negative idling down or most of the time once it’s in gear. Started over fresh factory tune when I get my vt in line and my engine/zero pedal/immediate torque mirror which would be beuno, it’s diving -20 degrees. I think the airflow increase/changes in the torque model are making this extremely difficult or it’s a modifier I’m missing. In SD I can’t even safely drive it stuck in negative it will lurch once you pedal it hard.
22x/23x rkspeed custom grind +32% fuel lobe required hpfp lash cap on the lifter
Dual .660’s
Hardened pushrods
GM LS7 lifters/trays
CC turnion upgrade
CC phaser lockout
L86 manifold- throttle body
Airaid MIT-factory airbox
Taylor 409 Lt1 wires-Delco plugs
Speed engineering Lt’s->vbands->Pacesetter ORY
Vacuum pump delete