Quote Originally Posted by 2bking View Post
I haven't seen any dyno results between J-pipes and the full flow Stainless headers but do have some seat of pants experience. J-pipes are very restrictive. I too recommend the Stainless headers.

After having done several Coyote powered cars with 4 into 4s I was kind of unimpressed by the configuration and obvious restrictions of the J-pipe setup when I had one in for body & paint recently. I noticed a tremendous difference in sound between the J pipes and 4 into 4s as well.

Jeff