do run 7173's good plugs

 

I have heard mixed thinhs about 7173s. I hear they run good, but they give electrical interference with the electronics in some peoples cars. mainly the radio.

Ditto on not running the 3mm headgasket with a Greddy kit. The 18g turbo and internal wastegate can't flow enough air to make up for the lost compression of a thicker headgasket.