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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Testimonials
AMAZING! I OWN A 2010 CTS 3.6 AND AFTER THE TRIFECTA TUNING IT FEELS LIKE A NEW CAR! I DID A LOT OF RESEARCH, AND I WAS A BIT HESITANT. I DECIDED TO JUMP THE GUN, AND PURCHASE A…I can’t say enough good things about this tune! I’m kicking myself for not getting it sooner. First off it shipped quickly to me and even got here before the estimated delivery …Let start by saying if yiur having issues with your GM Canyon/Colorado , shifting, stalling out on remote start. Hard shifting, radio changing stations, clunk noise under load, g…I am a commuter that drives 120 miles round-trip per day. I drive a 2013 Chevy Sonic sedan with the trifecta elite package. I can now get 40 plus miles per gallon with my 6 speed …Wow!! I was having the same problems everyone else was having with the weird down shifting and thought I would give trifecta a try. What a difference. Let me start by saying I fi…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…Wow! I don’t know why I waited so long. I installed the Advantage + a couple weeks ago on my 18 Colorado Centennial. The process was very easy and didn’t take long at all. It co…GM should contract these guys to write the stock tunes on their cars, the overall feel of the car after the Advantage tune is worlds better than stock. Car is a 2014 Sonic R…This is a good product and delivered exactly as the description explained it would. That cruise control button will get a little more use now.2014 CTS Performance Edition 2.0 Turbo Running the Trifecta tune, and I am very happy with the increase in performance! Very noticeable. If you own the same vehicle, you should b…I am really impressed with the results , great throttle response, acceleration is improved , the transmission downshifts much faster ,no errors .Easy to install and feels much smoother. The power is constant unlike stock tune. This is my 3rd tune from Trifecta no complaints at all. 5*. Heads up if you are running the r…AMAZING! I OWN A 2010 CTS 3.6 AND AFTER THE TRIFECTA TUNING IT FEELS LIKE A NEW CAR! I DID A LOT OF RESEARCH, AND I WAS A BIT HESITANT. I DECIDED TO JUMP THE GUN, AND PURCHASE A…I can’t say enough good things about this tune! I’m kicking myself for not getting it sooner. First off it shipped quickly to me and even got here before the estimated delivery …Let start by saying if yiur having issues with your GM Canyon/Colorado , shifting, stalling out on remote start. Hard shifting, radio changing stations, clunk noise under load, g…I am a commuter that drives 120 miles round-trip per day. I drive a 2013 Chevy Sonic sedan with the trifecta elite package. I can now get 40 plus miles per gallon with my 6 speed …Wow!! I was having the same problems everyone else was having with the weird down shifting and thought I would give trifecta a try. What a difference. Let me start by saying I fi…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…Wow! I don’t know why I waited so long. I installed the Advantage + a couple weeks ago on my 18 Colorado Centennial. The process was very easy and didn’t take long at all. It co…GM should contract these guys to write the stock tunes on their cars, the overall feel of the car after the Advantage tune is worlds better than stock. Car is a 2014 Sonic R…This is a good product and delivered exactly as the description explained it would. That cruise control button will get a little more use now.2014 CTS Performance Edition 2.0 Turbo Running the Trifecta tune, and I am very happy with the increase in performance! Very noticeable. If you own the same vehicle, you should b…I am really impressed with the results , great throttle response, acceleration is improved , the transmission downshifts much faster ,no errors .Easy to install and feels much smoother. The power is constant unlike stock tune. This is my 3rd tune from Trifecta no complaints at all. 5*. Heads up if you are running the r…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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