by dansv8 » Sun Aug 20, 2017 10:16 pm
Long time since i replied sorry,
cars spent 3 days with the Suby performance specialists, who dicked around for ages and werent able to pin anything.
All AVCS data is reading correctly, all sensors are reading correctly.
They believe it maybe injector or ECU related (ie ECU is part failing)
This is another quick run on symptons....
When stone cold, runs great, after about a minute, starts to stutter, miss, backfire, trying to accelerate is met with missing backfiring and the general unwant of the car to move
As it warms up the symptons get far better and at times its almost un-noticeable
Under boost it is 100% fine every time
I am wandering maybe it is ecu, or an injector, or maybe a sensor that is inactuve under boost ? i dont know enough about the way these suby tunes work but i know under WOT / PE ? boost enrichment and LS1 will only read from a few sensor and will go back to tune data as opposed to learned trim data
anyone have any other ideas, have a pair of coils coming to try, hoping i can finid some use injectors somewhere (even just 2) to try one bank at a time.
Cheers guys