I am think about getting a programmer and i was just curious if the programmers will lean out my engine. I already have a cnl mass air meter on my mustang and i know that they lean you out a little bit. Do you all think that with the programmer and the cnl meter that it would lean it out to much and cause damage. A buddy of mine said that with both of these mods combined i was flirting with disaster.
Please advise.
Please advise.