4.6L Tech
Hi Again , I just replaced the original OEM Original Coils on my 2000 GT with a set of GMS Ford 2V Hot-Street Coil Pack,40k Coil Packs, and I decided to change the spark plugs as well, I put Autolite Iiridium Perfomance 9 on it, the question... I Need to calibrate them ? Or let them just like...