ive been fighting this for a while to no prevail..
1968 Chevelle
Twin 62mm L33 5.3
SBE
Pac 1218s
decapped stock injectors at 69lb/hr - stock return style system at 58psi not boost referenced. unsure of fuel pump at this time but its not small.
sloppy stage 2 cam (228/230)
stock 4l80e / stock converter
drive by wire TB from a 2004 chevy Van motor (or so im told)
OLSD right now
so im trying to tune VE with the owner of the car at the wheel, were just starting to get into some low boost (2psi) and ive discovered that it wants to go super lean on decel, and the throttle closes right up (sometimes TPS right down to zero very briefly) and stalls the car when decelerating to a stop. I believe i have DFCO completely disabled.
The attached log doesnt show TPS to zero, but around 7% and super lean like 17-20:1 AFR.
Could anybody help a guy out?
dallas chevelle 05-25-20.hpl05-25-20 TT Chevelle Rev 6.hpt