No closed loop at WOT and low eng load
10-14-2004, 10:42 PM
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No closed loop at WOT and low eng load After installing an LS6 intake and much better,cooler air my car picked up very little if any ET/MPH.I pulled the plugs the other day and they seem extremely lean with a bone white porcelin and a green electrode wire.I used a snap on modus to see what was going on and set up for getting a MAFT.Low and behold the LFTs look great at cruise with good timing and no KR,but after a few WOT 3rd gear runs from 4-6K the o2s still bounce around as if at cruise and engine load is around 10%.How can this be? The TPS reads 100%,MAF and MAP looks good,timing at 31*.It seems to me the ECM thinks the car is not at WOT and is watching the 02s to set-up A/F and not the MAF.Speed inc. did do a mail order tune but says the WOT settings wouldn't be touched.Any help,what do I look for?
