Well DICK,with youre vast knowledge and endless experience with tuned exhaust systems,you might let the rest of the rc world in on youre methods and requirements to tune any engine,with out modifying the airframe,possibly keeping the the system in cowl,not having to buy a lathe and mig welder,keeping the power band somewhere below the rev limiter, and intact after the third flight,with my wife not banning me from the credit card.I realize every engine, no matter what type of fuel induction sytsem utilized will require different methods and set ups for peak performance and powerband ranges.Maybe JETT ENGINEERING will build a universal in cowl that will increase power and mid range for gassers?It still appears that TAURUS is an engine that would not require another loan to "tune it in" so I can go flying. I've spent enough years in the garage tweaking the exh. systems on cars and dirt bikes. I'm ready for a install that does not require finding the power band with a one of a kind pipe.