Who here is using PE on E38 PCM to disable closed loop idle with large Cams?
How many of you guys are turning on PE at idle to force open loop on a large cammed engine to keep it from over fueling and drowning itself?
How are you guys doing this?
I have an LS3 with a TSP Stage 2 Cam 229/244 .629"/615? 112 LSA, 109 ICL
I have long tube headers with an off road x pipe and rear O2's deleted and turned off.
I am using both MAF and VVE tables for tuning.
I have got the car fired up and running fine with a very stable idle at 800 rpm
However you can literally watch the fuel trims go positive and continue to add fuel making it terribly eye burning rich and if left to idle long enough will load up and misfire.
So I would like to run this thing in open loop up to around 1000 rpm and then have closed loop take over for normal driving.
Is there any other options to do this or is PE the only way to force open loop at idle?