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Re: GM 5.3 no open loop at WOT?
Posted to Technical Theory Forum on 2/22/2018

G,day Dave, I think most vehicles stay in closed loop at WOT these days, there would need to be full load enrichment written in to the program but it would not go unchecked, opposed to the older vehicles which had the "poor it in and get this thing cranked up"... Login to read more.