The Can Am Defender is an awesome sport/utility/work vehicle. EVP has worked their magic through tuning and exhaust components and have achieved significant horsepower gains through timing, fueling, torque limit modifications, rev limits, speed limits, etc. We also build additional safety into our tune by lowering the fan on temperature. The OEM fan-on temperature is is too high (well over 200 deg F). In addition the fan on/off temperatures can be set for each customer depending upon where they live and the conditions typically ridden in. Other great features are added and/or changed to enhance the drivability and fun factor of this vehicle. Purchasing this EVP ECU Power Flash (Tune) requires you remove your vehicle's ECU and ship it. Evolution Powersports has vast knowledge of the Can Am Bosch ECU and Can Am V-twin engine as we were one of the only companies that tuned the original Maverick 1000. We've brought that expertise to the Defender market to extract the most performance from the vehicle as possible with just bolt-on parts and tuning. Tune Features: High and low gear rev limit increased 100% Throttle Improved throttle response in all modes (E-Gas Settings Improved) Improved ignition timing advance optimized for 91 Octane for maximum power Fueling adjusted for aftermarket components (intakes & exhausts) for optimal Air/Fuel Ratios Fueling is Corrected for the Various Stages so No Fuel Controllers are Needed Engine Speed TQ Limiters removed ("Shaft Saver delete") Left foot braking for 2-foot operation Speed limits raised in high and low gear Torque limits removed in high and low gear V-Max Raised Revised Fan Temperature Settings. EVP always makes it easy to upgrade your tune in the future - you only pay for the difference in tune cost plus shipping. Plus if you ever need the vehicle returned to stock for warranty purposes, we will flash it back to stock, and put the tune back in it after dealer service for free! You only pay for shipping.