Evolution Powersports, in conjunction with their technology partner Mountain Performance Inc. (MPI), are proud to announce the development of a broad range of ECU Programs for the Yamaha Nytro models. The two companies have spent the last two years perfecting a variety of different ECU software calibrations that are ready to be unleashed on the Yamaha community to enhance the performance and reliability of these popular snowmobiles.
MPI/EVO Safety Flash:
In this software recalibration, the way the ECU reads the water temperature sensor is rescaled so that engine protection maps are engaged 22 degrees F sooner than stock (stock is 212 F, now will be 190 F). This will also turn on the temp light on the dash sooner. The stock parameters are not sensitive enough to protect the engine while under boost. If the temp light comes on while on boost, it is likely that the engine will be damaged before you can react to protect it. This software flash will alert the rider and begin to protect the engine by reducing timing to help safeguard against engine damage due to temperature induced detonation caused by high water temperatures. This flash works on ANY Normally Aspirated, Turbo or Supercharged Nytro as long as it utilizes the stock Yamaha ECU. $299.
MPI/EVO Reduced Timing Flash:
In this software recalibration, the timing tables are remapped to curve them for a boosted application. Ignition timing is gradually removed as rpm increases to eliminate any engine detonation. Depending on the application, the reduction of ignition timing can lower the fuel octane requirements, allow the engine to safely run higher boost and even eliminate the need to run a head shim. A good rule of thumb is that this calibration allows for two to three more PSI of boost without further engine modification or fuel octane increase. This flash works on ANY Turbo or Supercharged Nytro as long as it utilizes the stock Yamaha ECU. $299
MPI/EVO Safety Flash
with Reduced Timing:
In this software recalibration, the safety flash and reduced timing flash are combined to offer the ultimate performance and engine safety package. This flash works on ANY Normally Aspirated, Turbo or Supercharged Nytro as long as it utilizes the stock ECU. $399
MPI/EVO 2008-2011 Nytro hand warmer fix:
The reason the hand warmers do not work adequately on older Nytro’s has nothing to do with the warmers themselves – the problem resides in the ECU programming and how the hand warmers function. This program recalibrate the way the ECU handles the power output to the hand warmers which makes them function more effectively like the newer 2012+ models. This flash works on ANY 2008-2011 Nytro. $99 as a stand-alone, or $69.00 with any other flash.
MPI/EVO 550cc Injector Flash:
This software recalibration allows the replacement of the OEM 330cc injectors with 550cc injectors. The 550’s will operate the sled IDENTICALLY to the 330’s, but will have the capability to flow 40% more fuel. Property scaled larger fuel injectors are the only way to increase fuel delivery and have an OEM like performing engine – without hesitations, stumbles, etc. There is no need to control extra injectors which complicate any turbo or supercharger installation. This program also increases the idle RPM by 150.
This software flash is sold only with the high quality Bosch 550cc injectors and the direct replacement kit for the OEM 330cc units. This flash is for Big HP Turbo or Supercharged Nytros running an auxiliary injector or fuel system. $799 with three high quality, matched 550cc direct replacement injectors. Add the Safety or Reduced timing flash for $99, or both for $199.
For more information or to have your ECU reprogrammed contact Evolution Powersports in Stillwater, Minnesota at 970-680-3861
(evopowersports.com) or Mountain Performance in Draper, Utah at 888-649-4609
From the September 2013 issue of SnowTech. Most of the articles from SnowTech Magazine never go online as free content. In order to get all of the great informative articles, you have to be a subscriber. Subscribe here!