Update: We have completed testing and development on our street and track muffler system and should have production units by the end of the year. (Sorry, there is no heat option at this time. )
Our new muffler design works only with our headers and utilizes two stage mufflers for the street or single stage mufflers for the track. The muffler canisters are very high quality 304 stainless units made by Burns Stainless. The two into one configuration produces a higher pitch tone with more power (pulse scavenging) and reduced sound levels than a straight through design. Measured sound levels on open track are 86dB for our street configuration and less than 89 dB for the track (measured at 100'). The track system is configured with V-bands to quickly change from muffler to tuned megaphones for tracks that have noise restrictions.
The prototype street system with two stage mufflers is shown below:
By the way, another E-class track record utilizing our headers was set at High Plains Raceway at the PCA race in August. 2:01.8