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XfireZ51 · 12-11-2014

The LT-5 is an "unstable" engine in that it reacts quickly to input. The stalling when you let off Throttle is why the factory cal keeps the rpms higher(using IAC) to slow down the rpm drop. If it slows down too quickly it just drops down to the point of shutdown. It gets worse in a modded motor.

12-11-2014	#7
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Problem? The LT-5 is an "unstable" engine in that it reacts quickly to input. The stalling when you let off Throttle is why the factory cal keeps the rpms higher(using IAC) to slow down the rpm drop. If it slows down too quickly it just drops down to the point of shutdown. It gets worse in a modded motor.