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I am virtually having the same problem, allow me to explain and maybe this will shed some light as well. I have been having an idle issue from day one of my build and have chased it countless times. My mods for air are dual pop, 2.5 inch everything, selin kit, and ECU chipped for my air and 740cc injectors. Brand new TT fuel pump, Aeromotive filter and reg,fuel psi is at 38 psi as set by greg. tps at .44v, brand new filters, also just installed brand new IACV. used a good known working air regulator as well. Still running into the same problem as mentioned that when coming to a stop the car wants to shut off. parallel parking is a bitch because of this. and going in reverse i have noticed significantly brings out the problem of wanting to stall. I have narrowed it down to the ECU at this point which was also just mentioned. The car idles at both banks being 11.8 and at cruise the afrs on both banks are at 14.5-14.9 as per gregs tune. Under boost it goes right to 11.8 at which the tune was set for and pulls hard and smooth with no break up. Idle holds steady with vac, oil psi, and RPMs. Am I heading in the right direction as well as mentioned above
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