I am buying another set apart from that new set I previously bought. I am going to set one set of plugs at .36 and another set at .38 or .40. I plan on testing both sets to see which performs better in my car.
1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
Monochromatic Paint (Custom Blue)
Flat Badged (front)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS