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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From all the good reviews I have heard, I cannot wait to receive this tune and the Ghost Cam!Job well done, Trifecta! The improvement in throttle response, transmission response and transmission shift points is exactly what I was hoping for. All these improvements …I just uploaded the Trifecta tune to my 2017 Malibu 2.0L and I gotta say it's a whole different car. Pulls hard, shifts solid and revs out. It's night and day difference and the b…It took me a few week to bring myself to buy this tune, but now that I have it installed all I can say is wow.... just wow. This is the best money I have spent on my car! I have d…I bought the Colorado WT with the I4 because I needed a truck but did not want to spend 30000.00+ (I remember when trucks were for work and they cost less than a Cadillac). Need…Trifecta Advantage 2015 GMC Canyon 3.6L V-6 Bought this for my 2016 Canyon which was getting a little long in the tooth and the transmission was really searching for gears, e…Looked at and researched this product way too many times before purchasing. Should have done this years ago. 2015 Impala LT w/ over 111K miles on it. Gave me a new appreciati…Trifecta team and support are absolutely amazing. fast responses and great product. very knowledgeable team!. i currently have a 2018 sonic rs with all bolt ons, zzp turbo, bigge…Small Town Dealership Review Here. We had sold a 2014 Malibu with AutoStop system. It was stumbling to restart once it had Autostopped. Quick and easy to install with laptop. Do…First off before the tune ever went on the team found that my 13 2.0t Malibu was missing an ECU update which caused a catastrophic engine failure at 71K miles. Glad now to have …I can't begin to say how happy I am to my decision on going with the Trifecta tune to my V6 Camaro. This is coming from someone who had 2012 Camaro SS as a daily driver and I tr…I have had my tune for quite some time now and have been meaning to leave a review for months!!! I absolutely love what this tune did for an already amazing car. I was completely…From all the good reviews I have heard, I cannot wait to receive this tune and the Ghost Cam!Job well done, Trifecta! The improvement in throttle response, transmission response and transmission shift points is exactly what I was hoping for. All these improvements …I just uploaded the Trifecta tune to my 2017 Malibu 2.0L and I gotta say it's a whole different car. Pulls hard, shifts solid and revs out. It's night and day difference and the b…It took me a few week to bring myself to buy this tune, but now that I have it installed all I can say is wow.... just wow. This is the best money I have spent on my car! I have d…I bought the Colorado WT with the I4 because I needed a truck but did not want to spend 30000.00+ (I remember when trucks were for work and they cost less than a Cadillac). Need…Trifecta Advantage 2015 GMC Canyon 3.6L V-6 Bought this for my 2016 Canyon which was getting a little long in the tooth and the transmission was really searching for gears, e…Looked at and researched this product way too many times before purchasing. Should have done this years ago. 2015 Impala LT w/ over 111K miles on it. Gave me a new appreciati…Trifecta team and support are absolutely amazing. fast responses and great product. very knowledgeable team!. i currently have a 2018 sonic rs with all bolt ons, zzp turbo, bigge…Small Town Dealership Review Here. We had sold a 2014 Malibu with AutoStop system. It was stumbling to restart once it had Autostopped. Quick and easy to install with laptop. Do…First off before the tune ever went on the team found that my 13 2.0t Malibu was missing an ECU update which caused a catastrophic engine failure at 71K miles. Glad now to have …I can't begin to say how happy I am to my decision on going with the Trifecta tune to my V6 Camaro. This is coming from someone who had 2012 Camaro SS as a daily driver and I tr…I have had my tune for quite some time now and have been meaning to leave a review for months!!! I absolutely love what this tune did for an already amazing car. I was completely…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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