Recently had the idea to change my exhaust from stock manifolds and cats with a catback muffler to long tubes hi flow cats and a new muffler.

Not too familiar with this on Silverados, but for those of you who have done this before:

I planned on ordering a set of pace setter quick trip headers, the off road y pipe, two magnaflow high flow cats, and a moroso spiral flow muffler.

Will this all work, or does the off road y pipe delete my two cats?

 

Yes it does delete em I went that route but with a reversed summit glasspack then about 3 ft down a slp lm2 used stock piping then a 1 to 2 slp angled slash tip out the rt rear corner something like the dodge srt10s

 

check my public profile on my exhaust. i had a spiral flow muffler on a 09 cobalt turbo. didnt like it. went with a summit glasspak.

 

Yesterday I got the idea to just run two pipes side by side instead of the y pipe. If I do it all custom I can allow for room for the high flow cats. I'll need two mufflers and a few angles and at least 2 or 3 clamps. I can use the existing hangers on the right side of the truck and then clamp the two pipes to each other. That should work perfectly because after the muffler I already have two pipes ran out for dual 45 degree exhausts out of the back of the truck. Thoughts?

 

check out arh they have what your talking about. but you gotta pay to play.