Extremely Rich @ WOT

[Spinnin_wheels]

good afternoon, i am in the process of tuning a centrifugal supercharged 426 (6.4 based) gen 3 hemi. I was making good progress moving into WOT tuning from partial throttle street tuning when i had a rocker shaft failure during one of the runs. up to that point it was running about 11.6AFR through the pull. after the repair when making a pull it maxes out both of my AFR widebands i have at 10.00. I tried a test of commanding power enrichment to 12.5AFR instead of 11.5 and there was no deference. the only other mechanical change was pcv was removed and vented to atmosphere with a catch can. i re calibrated the ve tables after with STFT+LTFT math to make sure it was back under 5%
the car runs and drives at 14.7 when cruising around so i am kind of stumpped here. i have checked for boost leaks plugged filters and intercooler.

any help would be appreciated i have attached the current tune file with the PE set to 12.5

Thanks!
Niks Forced induction hemi camaro FINAL.hpt

[mbray01]

if commanding different afr's makes no difference, either you had false leans before due to the mechanical issues causing misfires, which are now corrected. this would cause an overly rich condition

also, if the exhaust got oil in it from the rocker issues, its likely it killed the sensors. the sensors that come with those gauges are extremely failure prone under normal circumstances

[Spinnin_wheels]

if commanding different afr's makes no difference, either you had false leans before due to the mechanical issues causing misfires, which are now corrected. this would cause an overly rich condition

also, if the exhaust got oil in it from the rocker issues, its likely it killed the sensors. the sensors that come with those gauges are extremely failure prone under normal circumstances

Thank you very much for the reply. the mechanical failure was an exhaust shaft bolt pulling out on number 1 cylinder causing the shaft to bend up and brake. however the reason the pcv was changed to vented to atmosphere was due to the non vented catch can filling quickly and drawing oil into the intake causing large amounts of smoke in the exhaust. from your experience would i need to just buy replacement AEM wideband sensors or the complete kit again to rectify this problem.
thanks again

[RedShark_JK]

you need to replace the WB sensor only ,I believe they are Bosch LSU 4.9 or LSU 4.2 depending which controller you have

check this link
https://www.aemelectronics.com/produ...ment-o2-sensor