I have TTI headers and the full 2.5" exhaust on my 6.1 L Hemi Barracuda. It is a great system, however the smallish (14" long) Dynomax Super Turbo mufflers p/n 17733 don't do much muffling and there is also an annoying drone when highway cruising. After some research, I decided to install a set of resonators. I picked Flowmaster p/n 15150S. It is a full 2.5" straight through design (ie no restriction) with a sealed resonator tube along side the main pipe. The drivers side is an easy fit, but...
Resonators
