Hey guys I just tried my new muffler today. It's an air freshener bottle same size as the mousse can. Now, I did somthing different. The engine is a TT .42 bushing, instead of using a header I just let on the stock muffler and took off the back part of the muffler. I had some threaded wire as thick and hard as the stock screw and I measured it and used double nuts on each side to hold it. I made a little hole about the same size as the stock muffler exhaust on the side at the bottom of the can. It made about the same noise the stock muffler did, but it realy brought it to life, it behaved almost as the 46 pro. I really loved this and everyone named my plane the "Air Freshener". Check out the pics. What do you guys think?
Victor

Do you have any RPM numbers to compare before and after?

It has been done before with good results. Can size matching to engine displacement is maybe a little tricky for best results. Some rpm gain is normally appreciated.

Well I don't really have any before and after numbers but I could get those next weekend if someone at my field has a mini-tach, which I think they do.
Victor