2007CalSpec

Quick question guys...Are the Ford Racing spark plugs that came with the Whipple HO kit a 1 or 2 piece design? God I hope it's not another 2-piece design.

solidsnakegt89

ehh i dont remember on that but with another note when i installed my whipple HO on my 08 the plugs they sent didnt fit so i had to re gap the stock ones and use those. but after a few runs at the track they started to fowl so i asked my tuner whats the best plugs to get and i went with brisk silver high HP plugs. they say there ment for high HP cars over 450 hp. Well i re gaped them like i was supposed to do to get a colder spark and i havent had a problems since. Personally i think there great plugs. a little pricey but seemed worth it to me.

Diabolical!

Mine were another two piece set of autolites, 1 step colder than the stock plugs. I plan to replace them with brisks before I have 10K miles on them.