Headers and keep emissions?
Was told by several dyno guys that disabling all the emissions stuff for the sake of picking up 2-5 hp is not worth the trouble. All but one of them suggested getting headers with the required ports, and going with a catted Y pipe.
Does anyone offer decent package like that? I have read horror stories on the low-hanging Y pipes, and people dragging their convertors
on simple inclines. I looked at Kooks, but it looks like they only have a race version for the 01-02 LS1's. QTP looks good, but from reading here, the Y pipe is terrible, ORY or catted, doesn't matter.

