GMS 47 muffler question - RC Groups

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Yes it will fit, I ran one on my 46 sf abn. With an ACP 10/6 prop and the stock muffler (baffle removed) the 46 tuned 14.5K, with the GMS muffler it turner 15.7 K. I was shocked at the by the performance, I didnt tac the engine until after I flew it with the GMS muffler, mainly because I noticed the speed increase and the ailerons got very touchy. Its a mini-pipe, keep an eye on the long bolt that holds it together, they are prone to loosen, lok-tite the screw and nut and dont over tighten it.

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