[Joshinator99]

Originally Posted by alekha

okay awesome! thank you so much for the information. i might be planning on going with a ported blower and smaller upper pulley as well as a bigger TB eventually. do you think ill still be fine with the 1 7/8 with those mods? also do you know anything about speed engineering headers? good? bad?

Yeah you’re fine with 1 7/8” with your apparent goals.

I’m not a fan of lower priced headers from overseas. I know some on this board have had good luck, but thinner walled headers typically cause false knock that results in power loss. You can tune around it but it’s not worth the hassle, I’d just get Kooks or American Racing and get it over with (coated, of course).