Like everything, i'm sure there's a right (and often more expensive) and a wrong (and often cheaper) way to install one of these things...
Current Setup (ignore crappy artistry):
Needless to say, i'd like to do it right, but I need to know a few things...
1.) What is the diameter of the downpipe on the Pacesetter header BEFORE the pipe gets small?
2.) Is it smart to cut the header downpipe right before it shrinks so that I do not have the restriction that causes?
3.) What size piping should I buy (my friend welds) to link the header downpipe to the new cat?
BTW, if anyone could explain why Pacesetter insists that one weld the downpipe to the cat in the instructions but shrinks the end of the downpipe so it can fit into the existing piping anyway, I'd love to hear it... That shrinkage at the end of the pipe sort of negates any gains caused by using a large-diameter downpipe, doesn't it?
That would work or you could have flanges welded on. That way you could bolt a high flow cat up to the header. Maybe the muffler shops know something I don't, but you usually don't weld normal steel to stainless steel which is what a new cat will be made of. As far as the header there is still a gain because a properly designed header creates a scavaging effect at the primarys.
bumpity bumpity bump... c'mon people
just cut off the tapered area, the pipe from my 2.4l header fit right inside my HFC and it welded on there just fine
