that's like $50 per MPH. I think I'll wait until I get the sheave. Our rhino has 25" big horns and we hit the limiter at 41mph (boo).Brian, I'm not getting the top speed some people are. But I still have the stock intake/exhaust. I didn't see adding these until I could program it in. I think it was well worth it simply for the throttle response. It seems to have more power in my opinion. Not hitting the limiter was a big plus. Adding the sheave got me to 49 before it started sputtering at the limiter. Once the ECU was available it got me to about 53-54, but I'm not a small person either. Mine is pretty much stock as well. I do have 26 inch mudlite tires too. Those speeds are from reading the dash which could be off a little. I hope this helps.
not at all if anything the ecu will help with bottom endWill the ecu and sheeve hurt my reliability or my bottom end power.I will probably go to a 27" tire.My wife wants to use this thing around our yard too.