EVOMSitECU Tuning for 996 GT3


Product Description

The EVOMSit ECU Tuning for the 997 GT3 RS has been tested under the most grueling conditions during dyno test simulation and during real world driving on the street and track by the EVOMS & SharkWerks team drivers as well as through our eDRIVE independent product validation program. Rigorous testing under different conditions has been conducted and evaluated with various fuel octane grades in the heat of the dry Arizona desert, the cool temperatures and humid weather of the California coast, the high elevation of the Colorado Mountains, the heat and ocean humidity of Mexico and the frigid elements of Minnesota. This stringent and grueling method of testing assures pure, crisp and consistent power in all of the conditions that drivers demand.

The Evolution MotorSports performance systems for the 996 GT3 and GT3 RS utilizes the Intelligent Tuning of EVOMSit. A tremendous amount of time was spent fine tuning the software for 91 and 93 octane fuels. All performance figures are based on 91 octane and power gains for 93 octane settings are slightly higher. A considerable amount of time was dedicated to the E-gas settings which have been optimized in both sport and non sport modes. We improved throttle response in both modes which provides an incredibly crisp throttle response while maintaining perfect drivability.

Not only are the power gains and overall performance impressive but we were able to improve the power while utilizing 91 octane fuel. Additionally, we have calibrations for larger displacement 3.8L engines as well as full race programs, all of which utilize our IST (Integrated Switching Technology) and SP (Sport Pedal) functions.

The EVOMSit TUNEit handheld unit is included with your ECU Tuning purchase. This unit allows you to download and install our performance software via your car's OBDII diagnostic port. Simply plug in the handheld unit via included OBDII cable, read out your file, and email it to us. (Access to an email-enabled PC with Windows operating system and USB port is done via the included USB cable.) We will email you back (usually within 24 hours) a performance file that you can upload yourself.

NOTE: Installation requires the use of an automobile BATTERY CHARGER (10+ AMP)

EVOMSit TUNEit Handheld Unit Features Include:

  • OBD Port Flash with EVOMSit GEN 2 Tuning Tool
  • Tuning Tool stores multiple Tuned files as well as Original software. At anytime, stock software can be installed without the need of internet or a laptop
  • Truly optimized power while maintaining OEM engine protection features
  • Factory smooth power delivery – most applications smoother than factory
  • Full data backup of each ECU that is upgraded
  • Diverse tuning portfolio supporting different hardware, fuel grades and climates
  • Optimized software for specific hardware
  • Integrated Intelligent Switching Technology™ (IST) with Octane Sensing Timing Advance

Dyno Showing Stock vs EVOMSit Power Gains:

HP Gain 91 Octane: 10 
TQ Gain 91 Octane: 10

IST (Intelligent Switching Technology):
IST is an OEM feature that is built into the factory ECU and allows for automatic switching of ignition timing maps based upon input received from other engine sensors. Available for certain EVOMSit performance programs, the EVOMSit IST programming incorporates this intelligence for true and safe flexible power without compromise. The EVOMSit ECU tuning utilizes the multiple OEM ignition tables in progressive stages, which can optimize safe performance based upon outside conditions and different octane fuels. The ECU automatically switches to the best-suited ignition map creating an automatic “race mode” if race fuel is utilized. This IST function is always active and will switch automatically without having to physically change anything. IST is far more intelligent than any manual switcher found in the market. The use of manual switchers can cause serious engine damage if accidentally switched to a “race mode” without having race fuel in the car. This manual type of switching technology physically locks the timing map and can over ride the ECU’s ability to protect itself if unfavorable conditions exist. This manual switching is archaic considering that OEM ECU has the ability to analyze conditions and switch timing maps automatically.

SP (Sport Pedal):
All E-Gas (drive by wire) cars from model year 2000 and newer have an electronic throttle valve, which is controlled by the car's ECU. Available for certain EVOMSit performance programs, EVOMSit Sport Pedal™ (SP) feature changes the ratio of accelerator pedal movement verses opening of the throttle valve which will increase throttle response. By modifying these maps in the ECU calibration, throttle response is drastically improved and the “throttle delay” which is a common complaint among enthusiasts is eliminated. Certain cars contain an OEM “sport mode” which incorporates this same Sport Pedal™ feature. For these cars, we incorporate the OEM “sport mode” pedal calibration for the regular mode and further increase the responsiveness of the “sport mode” with our improved calibration.

If you prefer not to remove your ECU and send it to us we also sell an EVOMSit TuneIT kit for $379 as an alternative method that allows you to perform the software upgrade via your OBDII/diagnostic port for your convenience. Requires the use of a PC Laptop & a 12volt battery charger.


Behind the Scene EVOMSit Tuning Video: