The interesting reality is these numbers are only predictions - there is no specific hardware in the powertrain that can measure ACTUAL delivered engine torque. However, the predictions are extremely accurate so long as the mathematical model behind them is correct. Initially implemented as a series of 78 three dimensional "coefficient" tables located in the ECM, they have grown to become the cornerstone of everything from idle control, to boost control, and things like the way the accelerator pedal feels in the vehicle. The end result is commanded timing, throttle blade position, and a host of other things are directly affected by how much power the engine is predicted to be making. The so-called ECM power-reported numbers are the end result of these calculations.
These tables describe how manifold pressure, measured airflow, timing advance, and even the commanded fuel ratio affect the engine torque output under all operating conditions. As vehicles are modified away from the factory configuration, it is important to keep this model accurate by adjusting the coefficient tables.
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Hello,I have been very satisfied with this tune,nice power gain,the transmission shifts are very good.The car has top end now and the throttle is a lot more responsive. Thanks for the great tune!Purchased the "Advantage" package during the Black Friday special for my '19 TourX and have been using it for 3 months. Dollar for dollar nothing will improve your TourX's perfor…My girlfriends 2012 Equinox has the dreaded oil usage and therefore throws P0420 often, disabling remote start. This engine is also gutless. I purchased this tune to take care of…After doing some research decided to order the trifecta tune and installed it about 2weeks ago. Install took about 10 minutes very easy to install. Took 2016 colorado for a ride …I just finished my install today and had to do some running around and I can not begin to tell you how much nicer this truck runs. I have always hated the lack of power and rel…Just wanted to let you guys know that the tuner program works awesome. I just got my best 25 mile average fuel mileage last week. 64.2 mpg on your tuner, up from 62.8 mpg on the fa…Really wakes up the truck. The shift points are great and feel smooth while having that punch that was missing stock. It's really the best of both worlds. You'll see an immediate…2019 Buick Regal TourX 2.0 Turbo calibration... For less than $500 you get 40+ hp, improved throttle response & gear shifts. Plus, it get's rid of the annoying auto stop. If y…Recently modified my 2018 Silverado LT 4x4 with a 6in BDS Coilover Lift, 35" Toyo Open Country R/T, Gibson Sport performance Exhaust, and Yukon 4.56 Gears. Was looking for a s…I am so impressed with the tune by trifecta performance. My 2014 cts v premium not only being extremely awesome and quick with awesome power I read alot of reviews about the tun…This tune has made my commuter a lot faster and fun to drive now. It disables the start stop feature which I’m glad because that was really annoying and puts more wear and tear o…Hello,I have been very satisfied with this tune,nice power gain,the transmission shifts are very good.The car has top end now and the throttle is a lot more responsive. Thanks for the great tune!Purchased the "Advantage" package during the Black Friday special for my '19 TourX and have been using it for 3 months. Dollar for dollar nothing will improve your TourX's perfor…My girlfriends 2012 Equinox has the dreaded oil usage and therefore throws P0420 often, disabling remote start. This engine is also gutless. I purchased this tune to take care of…After doing some research decided to order the trifecta tune and installed it about 2weeks ago. Install took about 10 minutes very easy to install. Took 2016 colorado for a ride …I just finished my install today and had to do some running around and I can not begin to tell you how much nicer this truck runs. I have always hated the lack of power and rel…Just wanted to let you guys know that the tuner program works awesome. I just got my best 25 mile average fuel mileage last week. 64.2 mpg on your tuner, up from 62.8 mpg on the fa…Really wakes up the truck. The shift points are great and feel smooth while having that punch that was missing stock. It's really the best of both worlds. You'll see an immediate…2019 Buick Regal TourX 2.0 Turbo calibration... For less than $500 you get 40+ hp, improved throttle response & gear shifts. Plus, it get's rid of the annoying auto stop. If y…Recently modified my 2018 Silverado LT 4x4 with a 6in BDS Coilover Lift, 35" Toyo Open Country R/T, Gibson Sport performance Exhaust, and Yukon 4.56 Gears. Was looking for a s…I am so impressed with the tune by trifecta performance. My 2014 cts v premium not only being extremely awesome and quick with awesome power I read alot of reviews about the tun…This tune has made my commuter a lot faster and fun to drive now. It disables the start stop feature which I’m glad because that was really annoying and puts more wear and tear o…prevnext -
By TRIFECTA Performance •
TRIFECTA: ECM Calculated Horsepower and TorqueFor years now, GM engine controller modules (ECMs) have had the necessity to determine how much torque the engine is making, largely for drivetrain "torque management" operations. These are called torque output predictions, and they became a heck of a lot more important once GM switched to "torque based" engine management strategies (in Delphi variants, first with the E83 controller, followed by the E39, then the E78 controller used in our LUJ/LUV Cruze and Sonic vehicles) - a switch that was needed to properly support factory turbocharged engines.
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