this one stumps me a bit, perfect idle AFR when cruising through town at steady 14.6 with quick rebound after every throttle blip.
If I kick it around on the highway for longer time like tuning WOT it goes straight to idle AFR of 14.6 but slowly creeps up to 15.5 and stays there no matter what. Changes to MAF airflow or VE table will not affect it, however runs fine in OLSD and does not do this, does it when CLMAF is enabled. Weird thing is STFT show zero % error as well when going up to 15.5 even if commanded AFR shows 14.63
This is a supercharged cammed/headed 382 LS1 @ 8 psi boost making about 600hp. Runs otherwise superb.
VE table got tuned with wideband AFR % error, same for complete MAF table. Plans for near future are to take MAF out and run 2bar MAP SD but until then want to make it run perfect. 60lbs injectors are dialed in like always so offsets etc. are correct.
tune attached, really open for suggestions here