Quite a few people as about the diverters and tuned piping for these engines. We are on it and continue to refine the systems to work better, quieter, and more efficient.
As of now, we are currently at the initial phase of the Research and Design of these diverter systems. We have created a few examples in steel, but the cost to produce these in stainless in-house is not conducive for mass production. I am looking for a manufacturing partner to help jig out the 4 stroke models. It will happen, we just do not have a firm timeframe on the production. As more information comes available, it will be posted on the home page.