The test engine was dynoed and easily made the 154 hp. Weight is a little less than a 914 due to a lighter intake/throttle body assembly compared to the stock carbs. Cost depends on a lot of variables like what motor you are starting with and what style of engine mount do you have? I did a complete custom exhaust in my Rans S6 since it uses a cradle style engine mount. The fuel injection system is 5200 euro which is pretty close to th same as US dollars right now. I can send you complete pricing for everything else if your interested. You can email me at
badassjason6@gmail.com There is lots of these engines running in the European countries now with some over 200 hours. One gyrocopter manufacturer (trixey aviation) is now running this combo and offers a 2 year /500 hr warranty on this motor so they are more confident in it than rotax is. I have 50 hours on mine now in the last month since building it and it's nothing short of awesome!