My bud has a 87 GXL and he has a high flow cat that he is going to but on along with duel tusdo mufflers, the qustion is what size pipe should he put on for the optium preformace?

ALso and cool air intake ideas that are "homemade"

PEACE

SNEAK

 

I have a turbo, but I think 2.5" is optimal for NA's. Anyone wanna back that up?

 

Yep. it's been tried and true by quite a few people. either a dual 2.5 setup or a custom single 3 all the way back.

i have the true dual 2.5 all the way back to the *** end. do a search for spoiled little boy and you'll see the pics of it.