2020-2022 Yamaha YZ450f Vortex ecu Tuned by twisted development, this has the newest set of maps they make for that bike. Ecu has low hours and is in like new condition, its plug and play but sometimes you have to make small adjustments to dial it in for your bike. Ecu says it was originally for yz250f, it has been remapped by TD for the 450. It can be run on the 19-23 250f but would need to be sent to twisted or xpr to remap Tuned for stock engine with a pipe, can be used on modded engines with the fuel trim adjustments. You can run pump gas, t4 or equivalent, or higher level race gas like pro 6 with adding fuel to it. New this ecu was $1159 with the maps, it adds really smooth power delivery and really changes the feel of the bike for the better, and the best power map 1 is crazy how much faster it makes it.