Originally posted by Big Jim:
A hotter coil may allow a wider gap, but it will make absolutely no difference in horsepower. The plug either fires or it doesn't.



Amen!

On top of that the stock coil pack has fired off 400+ FWHP (~500 crank) turbo'd Duratecs without batting an eyelash.


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.