Aftermarket Assassins ECU Tune for Polaris RZR Pro XP and Turbo R

Power Levels:

• The Level 1 tune is a modified stock power level tune, but has better boost maps to help keep you in the power.  We disable many limiters, up the speed limit, rev limit, and make necessary fuel & timing changes. The 2017+ factory tune runs a max of 14.5-15psi of boost, and we keep that in this tune, it's just easier to obtain & maintain that level.

• The Level 2 tune offers 16-16.5psi of boost and a 10-12rwhp gain.  This tune can be used with the stock or aftermarket exhaust.  Clutching is not needed, but is highly recommended with this tune, as just tuning the machine will not properly transfer the power to the ground. Clutching is another big horsepower gain.  91-93 Octane tune.

• The Level 3 91-93 octane tune is a game changer! Hitting hard at +20-25rwhp, this tune offers the highest boost possible(17-17.5psi max) on 91-93 octane fuel.  Due to the thicker head gasket and larger injectors on the 2017+ models, we are able to get away with his kind of power on pump fuel. These are absolutely huge power gains that will have you grinning from ear to ear.  This tune must be used with an aftermarket exhaust to run on 91 octane fuel and requires clutching. If using 93 octane (or 91 with octane boost) you can run stock exhaust/cat removed but you will leave power on the table.  Waste gate rod adjustment (2 turns shorter) is needed for tune to work correctly.  Billet BOV is also highly recommended. 

• Level 4: This tune is designed for 98-100 octane (will run on UTV 96, or most fuels up to 110 octane) and was developed using one can of VP Octanium to a tank of fuel.  Mixing other race fuel with the tune to get 100 octane output would work great, just keep in mind leaded fuels can take out o2 sensors when running leaded fuel consistently. From extensive testing, we know that this is the limit of the factory turbo before it becomes inefficient and simply starts blowing too much hot air. We correct many maps for this octane rating, assuring the most possible power.  This tune pack a huge punch with just a small amount more octane.  Exhaust and clutching are needed with this tune. Waste gate rod adjustment (2 turns shorter) is needed for tune to work correctly. Billet BOV is also recommended.

• Level 5: get ready to drop the hammer!  If you don't like to lose races, this tune is your friend.... and If you're friends don't like to lose either... they might not be your friends for long.  This tune is developed for 110 octane fuel (unleaded is recommended if you are keeping you plan on running your o2 sensor) and really hits hard.  This tune runs around 18.5-19 max psi.  This is where we found the turbo to max out for the most part, so we went to our timing tables and did some work.  Adding a revised timing curve with these boost pressures is a recipe for absolutely stupid power that hits harder than you can imagine.  Exhaust and clutching are needed with this tune. Waste gate rod adjustment (2 turns shorter) is needed for tune to work correctly. Billet BOV is also recommended.