Using Pre-cats over Hi-flows.....
Yeah I agree, your tips are right under the cab. My Silverado drove me crazy enough with its Flowmasters droning so i'll be happy with the calmer interior
well, I am going to try it.....sounds like it works and might as well try, not really going to be out anything so I will give it a shot. Let you know how it turns out. thanks for the help Joshmac
Change of plans......
Well looks like I am back to the hi flows option. Can't find anywhere around here that will remove the other two without replacing them with new ones. Plus the last shop told me that most likely AR will be moving back to some sort of inspection process in the very near future. Oh well, the hi flow option isnt too expensive.

x2.
None, Its almost like stock inside, then put the window down & theres the sound. Kinda cool, I love how sound blocking the 04+s are. Once them rear cats are out hopefully it will hum nicely though, not a Flowmaster drone hum, just something I can hear at 1000rpm, I hear mine at 1600rpm with windows up, its a very low hum though.
i have a y-pipe with no mufflers coming out at 45's , i just deleted my two rear cats and it's loud but sounds good thinking about putting in a magnaflow later. And yes it is kind of hard to weld. I had dual side outs before the tire, no muffler, all four cats and that setup drone like crazy in the cab this new setup doesn't drone too bad
Last edited by RathF150; Aug 9, 2008 at 11:17 PM.
Many people have been doing so and getting $50 - $200 on average
My 14" Maggies with 2 high flows sounds mean as hell. Just took a highway trip this weekend and she purrs like kitten down the interstate, but when I get on it, she sounds like an Angry Tiger!
http://www.youtube.com/watch?v=GRQC9jsI2Ao&feature=user
http://www.youtube.com/watch?v=GRQC9jsI2Ao&feature=user



