4-2-1 or 4-1 headers

[QUOTE=spikeymike;1853143]If you would have been in the import scene in 98-99, then you would have.

I.E Pacesetter.[/QUOTE]

lol! i still have a mag from back then testing the ps on c1. it made a few peak hp over stock, but, it lost so much power everywhere…i’m talking 2-7600rpm…tq & hp losses across the board. it was proof as to the amount of r&d put into certain products

Yep. And if I remember correctly, the coating on it would start flaking off after heating up, and the paper gaskets were crap.

I wanna know what headers are 2.25 piping… i believe the rsr header and megan header (4-2-1) are 2.25 what else? i am going with an rsr exmag in the future and also with the carsound cat… it doesnt come with the flanges… so i jus get the 2.25 cat and let a exhaust shop weld it on for me?