Im going to be taking my truck to a shop soon to get new exhaust system. So what im woundering is what muffler has the best deep agressive sound as well as the way its piped. Thanks.

 

Watch some youtube videos. "Best" is a matter of opinion.

 

^ yep watch as many different videos as you can. The general favorites are magnapacks, bullets, borla xr1s.

 

For those who are running magnapacks, x-pipe, with high flow cats how much did it run you and in your opinion is it better than flow master super 44?

 

I don't hate flowmaster as I've had quite a few of them including on this truck. I swapped to a dynomax bullet, similar to magnapack and the sound is much better. Flowmasters are chambered for their sound. Straight thru mufflers are generally preferred for minimum restriction. Here's a thread from when I swapped that has flowmaster to bullet with comparison videos.
https://www.f150online.com/forums/ex...-complete.html

 

Flowmaster is a thing of the past. Stick with a straight threw muffler.