Muffler swap

Is there anything to be gained or lost performance wise from a simple muffler swap to something less restrictive? I’ve got a 5.7 Trd with single exit. Toyota engineers seem to know what they are doing so I’m wondering what the negative/con would be to replacing muffler with a Black Widow Race or Carven R for more rumble and keeping all else the same. I do tow a camper +/- 4x year.

 

@dirtydeeds

I've been searching exhaust myself, there's a lot to it with these trucks. Especially if you are sensitive to interior resonance. Keith over at dirty deeds seems like the go to guy.

 

I’ve seen some folks that did the dual 2-1/2 in single 3” out Flowmaster Super 50 in Stainless. That’s what I’m thinking of.

 

I have a 22 inch magnaflow currently. Zero drone on cruising, very slight increase in sound at idle and acceleration, but not much motor is still louder. Some slight drone at 1800 rpm on city acceleration.

slight mid range power gain, very slight loss of power off idle. I switched back to oem just to test. I can tell the magnaflow is there on freeways and while towing as i stay in 5th gear for the rpms

really considering a flowmaster 70 for the sound change

 

is yours the two in one out?

 

Factory 2 in and 1 out.

 

Yes, if i were starting over i would do a y pipe with a single in muffler