I've searched around on here and other forums for a while but have quite found what I'm looking for. I've got the borla made GMPP currently on the truck and looking to add a resonator in front of the muffler to cut down the drone but not necessarily make it quieter (although it will be a biproduct). I know typically on normal mufflers the smaller the louder but does this also apply to the bullet style mufflers?

I'm not really worried about the price but want a stainless muffler to go with the rest of the stainless system. I think I have it narrowed down to three options and they're below in order of how I'm currently leaning.

1. Kooks PN R300-10. It has a case length of 10". (Should have the least impact of output level correct?)
2. Borla XR1 PN 40085. This one has a length of 15". (Afraid this length might make it too tame)
3. Dynomax PN 24248. It has a case length of 12". (Not really sure if there'd even be much difference between this and the kooks)

 

A flowmaster y merge and magnaflow muffler will eliminate drone.

 

I've decided on a 4" round magnaflow muffler and will go from there. I'm sure that will take care of it though. Thanks for your input.

 

I will be changing my set up and removing a magnaflow 4 30 muffler with maybe 1000 miles on it. Anybody interested in it can message me.

 

How to actually get rid of drone.....

https://www.performancetrucks.net/fo...-drone-489463/

 

Voodoo black magic and therefor not trustworthy!

 

I used a 3 in from vibrant and it worked well.

 

I've build 5 at 32" and all of them have worked. Got rid of at least 80% of the drone. Killed drone on my Dmax 100%! Knocked 10dB off my turbo truck at cruse.

 

The exhaust shops in my area blow and havent found one willing to do this. Wish I could weld or I'd do it myself. I'm still looking around but may end up doing the magnaflow muffler.

 

Here is a pic of KB's resonator, and it works. Show your exhaust shop this picture, its a simple concept.