Im having trouble trying to figure this out. Tuning my 2010 ls3 Camaro. The formulas ntk provides are if the stoich is 14.7 or 14.55? Im using pump gas with up to 10% ethanol (14.2 stoich). I want to tune in lambda which is actual afr/stoich of fuel being used? Here is the pid list I have from the tuner which screwed along far too long not responding to emails etc which is why Im going to do this myself starting out as a maf only tune and than maybe doing the ve tables as well. The tuner just set the B3671 to 14.55. What do I need to change to make this right? Also I can only find commanded AFR for the car not lambda. Even after validating pids.