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XfireZ51 · 08-16-2014

Chuck,

16d SA is the stock setting for Closed Throttle SA. Then your SA bounces up to 21 or so which is probably what is in the PT Closed SA table for near idle rpm/kPa. And the ECM is swinging back and forth between the two. You can flatten the SA table so when u transition from Closed Throttle SA to the SA table it's a smoother transition. Also, I would lower my IAC counts at idle. With the engine warmed up and in C/L, you'd like to be somewhere in the 5-15 range.
Make sure you reset the TPS v when u do that.

08-16-2014	#16
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,685	Re: LT5 hesitation... Chuck, 16d SA is the stock setting for Closed Throttle SA. Then your SA bounces up to 21 or so which is probably what is in the PT Closed SA table for near idle rpm/kPa. And the ECM is swinging back and forth between the two. You can flatten the SA table so when u transition from Closed Throttle SA to the SA table it's a smoother transition. Also, I would lower my IAC counts at idle. With the engine warmed up and in C/L, you'd like to be somewhere in the 5-15 range. Make sure you reset the TPS v when u do that.