Shouldn't have opened my mouth about the Marauder engine, I thought my buddy told it was the same but whatever. I talked to Aero today and they recommended before muffler to deaden the drone. My dealer wants to try some things out (sound dampeners/weights) to make me happy I guess. Don't have much confidence though. May be stuck with this system (parts dept won't return it) and as much as it pisses me off that I'd have to spend even more money (as if $600 wasn't enough already) to have the Aero resonator installed by a muffler shop, I guess that's what I'll have to do.

 

I have a 4.7L with the mopar/borla exhaust and it has aa drone all vehicles have a drone... my unit which is an 04 crown vic police inteceptor has a drone... stock or performance the drone is there performance makes it louder. me personally i wouldnt buy performance exhaust if i wanted it to be quiet. im satisfyed with my exhaust i only paid $500 for it what a deal

 

can anyone here tell me why SOME dealers have the mopar/borla exhausts and others do not? i'm in st louis and i have called 2 so far without any luck. if you go to the borla website, an exhaust is between 600-800 bucks. i will spend that IF i have to. [sm=feedback.gif]

 

I had the same problem with the Flowmaster 50 Series Delta. It was in my truck for only 2 days before it drove me crazy. I went back and had them swap the Flowmaster for the Magnaflow and what a difference. The truck sounds awesome outside and virtually no drone or interior resonance. I am super happy I made the switch.

2005 4.7L QC RAM 1500
Magnaflow Exhaust
K&N Air Filter
Chrome Nerf Bars
Tonneau Cover

 

Edelbrock has a new muffler design that is worth a look:



the chamber marked '2' is called a Helmholz Resonator and is there to reduce drone.

http://www.edelbrock.com/automotive_...mufflers.shtml

Me, personally I prefer the RV style DynoMax stainless steel UltraFlo that is 36 inches long and 6 inches in diameter as the primary muffler and an exhaust tip made from a 16 inch long ss UltraFlo as the exhaust tip. The UltraFlo mufflers have no more backpressure than the same length of exhaust pipe and are available in various sizes in both ss and aluminized steel for those on a budget.