'04 stang - can I change idle rpm?
Posted: Sun Mar 27, 2011 6:42 pm
My car is a 2004 Mustang Mach 1. Would lowering the idle rpm with my U7146 (new revision) do any harm? It somehow was lowered from 704 to 554 but just now noticed it. Nothing wrong that I see. I'd like to leave it lower for decreased wear but would like expert advice first. Thx alot for any help.