my r32 gtr has an issue with tune ...
i rebuilt it last year .. pistons oil pump re-co head and turbos . stock ecu
issue is when i time the car with new cas sensor it runs very well , 230+atws ... but 1 week later , it detunes itself and runs sluggish. alot more noticable above 3000rpm. engine doesnt miss hesitage , engine lacks intake and turbo noises and a heap of power above 4000rpm. . . . why do i have to keep playing with the CAS sensor .. car drives fine though ....
i put 2mm washer on timing case, followed by CAS sensor, spring washer and 2mm washer
wiring issue? should i find another ecu?