M.I.L. Eliminators.
 

If i don't get M.I.L. eliminators,will it affect performance,or is it just the engine light?In my previous car the check engine light came on for a month or 2,and then came off,and never came back on,i'm not sure how mustangs do that though.I don't mind the engine light,so i wouldn't even bother with the M.I.L. eliminators. :D

The problem is when the check engine light comes on for a reason you will never know it and might do more harm to your engine. Pay the $50

I doubt i can harm my engine,i would understand if i got a lean fuel mixture or something like that,but not actually hard my engine.

I've asked that same question about a year ago and i was told when the check engine light comes on it puts your car in some basic program thing where your not at peak performance or somethin like that so whoever told me this tell him too cause i forgot what you said:D