Im a bit confused. I was told spark leads can improve performance, but someone else sez thats nonsense. My car needs new leads and didnt know if i should go for agents, a generic or performance leads. If i do gain something out of the more expensive performance leads, what would the gain be like?

 

It will be very small if you have a stock engine. You may increase your fuel economy. MSD 8mm are good upgrades. Dont fall for the Nology Hotwires hype.

Berz out.