Bottle type mufflers on the 6 speed

6 Speed Bottle Mufflers

The Challenger exhaust systems are different for the automatic and the 6 speed car.  The automatics have a suitcase style muffler mid-body while the 6 speed cars have bottle style glass packs in front of the differential.

In either case though the Challenger has amazingly huge “resonators” that are tucked in the rear quarter panels between the rear wheels and the rear bumper.  Huge seems almost like an understatement as I couldn’t believe how big (and heavy) these things were when they came out from under the car.

If you’re wondering what a resonator is, well one definition is, “a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves”.  For me, I just like to think about it as another muffler.

Big Resonator

One of two on the rear of the car.

Did I mention this thing was huge?

From Blastin’ Bob’s Exhaust I ordered this kit (GP250CE) which arrived at my door three or four days later.  Naturally it arrived on a day when it was snowing, about 28 degrees with a howling wind.

At the suggestion of a friend I went to a local muffler shop who said he would install them while I waited for $50.00, including welding in the pipes rather than clamping them in.  It was worth every bit of $50.00 since I also installed the ‘skip shift eliminator’ while the car was on the lift.

The muffler guy ended up spending about 45 minutes on each side of the car mostly because he had one hell of a time getting the rubber grommets out of the factory mounts and because he was being careful around the car.

This is a job you could do in your own garage or shop if you have a sawzall or similar exhaust cutting tool and a few hand tools.  For me, although mechanical by nature, I’m glad I took it to a place with a lift and paid the $50.00.

So once installed how’s it sound?  Not bad.  I did the following before and after video to show the difference from the outside of the car.

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The total price of the pipes and install was around $250.00.  Certainly cheaper than the $900 to $1,500 cat back exhaust systems for the Challenger.  The car sounds good at idle and awesome WOT.  When you mat the pedal, even at speed with the windows down you can tell the pipes are really talking.