mangaflows are straight thru tho...so did u get rid of the y and runs separate pipes all the way to the muffler?
mangaflows are straight thru tho...so did u get rid of the y and runs separate pipes all the way to the muffler?
Yessir I did, they didn't have time to run new pipe from the headers back so I just had them cut at the Y kinda and run seperate pipes. The muffler has a built in X but I thought it would be better if the X was solid and before the muffler. It feels like it does have a little more pep even with the huge muffler, then again I did go from 1-3" pipe to dual 2.5" pipes.
2005 black Yukon XL SLT - traded in for me wife's new Fusion (GM sucks these days)
2002 black Yukon SLT (the skinny sister)
1969 green Pontiac GTO (Layla, AKA the black sheep)
INSTALLS AND MORE.. http://www.ls1truck.com/forums/my-ga...-low-life.html
Sticky/broken gauges? I can help. PM me for details.