Are there any definitive examples of true power increases and how much? We all know of those that talk the talk but can they walk the talk? An example is my friend with his 99 GTS that put on Borlas Headers and Exhaust with the low restriction Cats as well as his K&N’s. Then there is my stock 94 with K&N’s and no Cats that still beats him every time. Even switching cars with the drivers it’s the same result, the 94 wins every time.
My heads are coming off to change out the head gaskets and while they are off I will consider having some head work done to insure the competitive edge as my friend is looking seriously at a blower but I will need some references before I do anything.
Tim