The Renesis has a much milder exhaust due to the side ports. I have a 13BREW- the turbo version p-port exhausts without the exhaust splitters. This has got to make the most agressive exhaust pulses of any of the 13 B engines. It is not turbocharged, by the way.
If I can continue to use the Hushpower with the guts blown out, I will. I just saw a line of mufflers by this company that looks promising:
-----Original Message-----
From: Dennis Havarlah <clouduster@austin.rr.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, Dec 2, 2010 1:03 pm
Subject: [FlyRotary] Re: Hushpower Muffler on Renesis.
I've had a Hushpower II Resonator on my Renesis for 250 hrs of flying and 300 total run time. After about 230 hours I took it off and inspected it. The insides were wrecked, burned and mostly gone. I cleaned it out and reinstalled it on the plane. It now is just a larger exhaust pipe and the neighbors say it is a little louder than before. I do have the Renesis exhaust blowing into a 4 inch dia. X approx. 6 inch long swirl tank that reverses the flow from forward to rearward.
I never experienced any loss of power as the inner parts of the muffler were failing.
Dennis H.