i've never used the engines.........but i have helped with the OS .46 and i have a .91FX.......there great all you have to do is tune the high end and run one tanks on rich.......fly about 5 tanks on rich then just stick it a few clicks off top and yer good to go its very easy to use...........i doubt it has 5000 RPM of the evo but it might have 500.......if you want more power get the tower hobbies muffler with it.......thants worth 300 more rpm.