Dynomax Ultraflow mufflers..

72Duster440 said

You talked me in to ordering a set for my Duster. It has newer Hooker Aerochambers on it that sound good, but it might be time for a change. Plus, Summit has them for $46 each after mail in rebate and free shipping.

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I have 3 1/2" aerochambers on my 540 Demon going into dumps, H pipe. Sounds OK but haven't really been able to wind the motor up yet.

On the 46 I used 3" X-pipe, 8" long cherry bombs, then 3" flow 40's. IMO it sounds great and no tunny sound after the bombs went on.

Tried that with the 3 1'2 and the bigger ccherry bombs would be too lung to fit with dumps at the axle.