I had a Magnaflow 12588 installed today along with some Hooker long tubes (Granted this is on my F-150 but I'd figure I would share this muffler as it works very well). I had it dumped as I need to have a stud girdle installed prior to having tailpipes made...so there is some resonation by being dumped. Should easily go away when tail pipes are made.

The sounds is great. Very deep and mellow, no rasp or nasty sounds...Just what I was looking for.

Thanks to Jim (Y2K Silverado) for the recommendation on this muffler!

 

so which muffler do you like better, the magnaflow on the ford, or the flowmaster on the Z71? my next truck, which will be awhile, will proabably have either one of those. my borla is too quiet

 

The Magnaflow sound is totally different, I will be putting one of these on my Z71 at some point...when I put on my 3" duals in my attic a big case Magnaflow will go on there too.

The sound is just so much deeper and mellower than the other muffler. I had a 50 series Flow on that Ford and the resonation on the highway was very bad.

 

Hey, Glad I could help!!
Jim