Hi All,
I've been battling issues with my L67 swap in my Fiero. It is a rebuilt L67 with a PCM from a 1999 Buick century Custom 3.1L that has been reflashed by somebody else. I've been battling a full throttle misfire/shudder after hot restart. However, there is no misfire detected.
I figured best case I should run CASE learn but when I try to run it in HP Tuners it just says ON or OFF and never gives me a window to run it.
I've attached a log file where I go full throttle and it misfires/shutters repeatedly along with the tune file.
I've been at this for a couple years now trying to chase this issue and am really hoping the investment in the HPTuner helps out a lot. Still have a lot of research to do though...
Another issue I find is the catalyst DTC is never ready.
DTC's.JPG
b.hpl
Fiero 2023_06_26.hpt
Thanks,
Tyler