Just wondered if anyone on this site has tried these on their shelby and if they have noticed any pwr gains or mileage increases.I've got the basic bolt-ons on my car;kooks L/t's,c@L cai,2.6 pully and tune.Thanks.
I saw a small gain on a non shelby car with the coils, never seen as high of results as their claims. The stock coils work very well unless you want to blow some money or they are weak.