I have my MAF tuned in line with my MAP and WOT tuned on a dyno with wideband to a nice 12.7 across the board.
My O2 sensors were just off the wideband by a few points ie running 14.5 to 15 on cruise while I'm commanding a 14.6 AFR in HP Tuners. I have cats on the car so I would guess that I'm running either close or to what I'm commanding or a bit richer.
My question is what should I focus on to get the car to pass emissions? We do an idle test and a drive test that is 1800-2500 rpm.
Cam is a TR224 0.561 lift, 112 LSA. Longtube headers, ceramic coated, cats, true duals, stock 98 LS1 heads, LS6 intake and Air Lid.
It is a bit rich at idle according to HP tuners, I've played with leaning it up in the primary VE and raising timing a bit, but I think something else is richening it up there. Any suggestions on how to proceed?