listen to what he says....you will never get to do the top end thing unless you live in Utah.... I pegged the limiter before my tune in less than 1 mile...that is all you need to know...play on the track, it's safer for all of us....but if you need to know, I feel with the gear we have, the rpm's we turn with a tune, all the necessary mods, it would peak around the 180 mark...and so would the MB brother...