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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Everything I have read pointed me to this tune and I was still taken back at how much power I gained. I have an automatic transmission and breaking the tires loose takes not much t…I bought this tune for my 2020 Chevrolet Impala Premier as the 6 speed felt sloppy and unrefined from the factory. I had a friend recommend the trifecta tune as he bought the tun…Amazing, love it on my Malibu 2.0 Premier.I've been really happy with this tune. My Colorado seems really light on it's wheels now. The "sport " mode is a bonus. Makes red light launches a seat of your pants experience.…If you own a non GS Regal and use this tune you will be absolutely shocked at the amount brutal power your car will throw to the ground. My car is 100% factory but it feels anythin…First let me start by saying the tune by Trifecta is second to none. It makes the car feel how it should from Cadillac. The difference is NIGHT and DAY. Their customer service i…If you've thought about getting rid of your Colorado because of the poor factory tune, purchase this software. Genuinely feels like this is the way the truck is supposed to driv…My wife drives a 2018 Ford Focus ST with upgrades of... -bigger intercooler -cold air intake -catless downpipe -1step colder plugs -EAGLE F1 ASYMMETRIC 2 235…I just purchased the Advantage tune a few weeks ago. Take a few hours for my file to be able to download, had to wait a few days for the cable to arrive....costumer service is to…When I first installed the tune I noticed the throttle response right away, after driving with it on it took me a while to get used to. I’ve had the car for 3 years now and I’m v…I have to say that I am super pleased with this tune and how much of a difference it has made to my car. IT IS shifting faster and boy can u tell a difference in power, the motor s…After having it for about 5,000 miles, I am overall very happy I bought this tune. The most noticeable difference is how fast the automatic transmission shifts. Often times under h…Everything I have read pointed me to this tune and I was still taken back at how much power I gained. I have an automatic transmission and breaking the tires loose takes not much t…I bought this tune for my 2020 Chevrolet Impala Premier as the 6 speed felt sloppy and unrefined from the factory. I had a friend recommend the trifecta tune as he bought the tun…Amazing, love it on my Malibu 2.0 Premier.I've been really happy with this tune. My Colorado seems really light on it's wheels now. The "sport " mode is a bonus. Makes red light launches a seat of your pants experience.…If you own a non GS Regal and use this tune you will be absolutely shocked at the amount brutal power your car will throw to the ground. My car is 100% factory but it feels anythin…First let me start by saying the tune by Trifecta is second to none. It makes the car feel how it should from Cadillac. The difference is NIGHT and DAY. Their customer service i…If you've thought about getting rid of your Colorado because of the poor factory tune, purchase this software. Genuinely feels like this is the way the truck is supposed to driv…My wife drives a 2018 Ford Focus ST with upgrades of... -bigger intercooler -cold air intake -catless downpipe -1step colder plugs -EAGLE F1 ASYMMETRIC 2 235…I just purchased the Advantage tune a few weeks ago. Take a few hours for my file to be able to download, had to wait a few days for the cable to arrive....costumer service is to…When I first installed the tune I noticed the throttle response right away, after driving with it on it took me a while to get used to. I’ve had the car for 3 years now and I’m v…I have to say that I am super pleased with this tune and how much of a difference it has made to my car. IT IS shifting faster and boy can u tell a difference in power, the motor s…After having it for about 5,000 miles, I am overall very happy I bought this tune. The most noticeable difference is how fast the automatic transmission shifts. Often times under h…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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