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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I watched some videos on YouTube that had positive reviews but difference in just a small power boost and the transmission shift tuning woke up my sleep truck. I also had a fast …2018 ATS - 3.6l Premium Luxury AWD with the Performance Package from Cadillac. First off, World Class Customer Support from Trifecta! These guys really stand behind the…Where do we start? How about a burnout? Yes, I can! This is one of the best tunes I've ever used on a vehicle. Just the seat of the pants result is worth the cost and it's not e…Much more responsive, and a noticably better power band, definitely makes the truck more fun to drive, and the customer service is excellent. the shifts are so much smoother …Very satisfied with my purchase, my car used to make a slight rattle when first pressing the gas and your guys software resolved that along with giving me more power throught the…WOW! super nice just put the tune in my 2019 cruze and took it around the block! Good thing the cops where not around took my stock car with a AEM C/A intake to a hole new level…So I purchased this for my 2008 Pontiac Solstice GXP 2.0. Install was way easy, and my only issue was that I didn't push the button twice to get my car into competition mode, once …Outstanding tune! It really woke up my ride (2013 Sonic RS) and worked great with my other installed mods. Amazing customer service as well.I love this product got it for 2014 Chevy Malibu 2.5l 4cyl. It made the car feel like it came alive, much better shift point’s especially on hwy previous to the trifecta performa…I’ll split this review into two distinct portions, as I believe they both are integral to your purchase and deserve to be equally represented. The tune: I think the one o…I have had a few of the Canyon's since they were reintroduced in 2015 (had 2015 SLT 4x4, 2016 SLT4x4 and now the wife drives 2018 Denali) and I have always hated the way it seems…This tune made my Colorado a totally different truck, it's completely transformed, no more lagging transmission, the engine now has power in the mid-range, and it's very quick cons…I watched some videos on YouTube that had positive reviews but difference in just a small power boost and the transmission shift tuning woke up my sleep truck. I also had a fast …2018 ATS - 3.6l Premium Luxury AWD with the Performance Package from Cadillac. First off, World Class Customer Support from Trifecta! These guys really stand behind the…Where do we start? How about a burnout? Yes, I can! This is one of the best tunes I've ever used on a vehicle. Just the seat of the pants result is worth the cost and it's not e…Much more responsive, and a noticably better power band, definitely makes the truck more fun to drive, and the customer service is excellent. the shifts are so much smoother …Very satisfied with my purchase, my car used to make a slight rattle when first pressing the gas and your guys software resolved that along with giving me more power throught the…WOW! super nice just put the tune in my 2019 cruze and took it around the block! Good thing the cops where not around took my stock car with a AEM C/A intake to a hole new level…So I purchased this for my 2008 Pontiac Solstice GXP 2.0. Install was way easy, and my only issue was that I didn't push the button twice to get my car into competition mode, once …Outstanding tune! It really woke up my ride (2013 Sonic RS) and worked great with my other installed mods. Amazing customer service as well.I love this product got it for 2014 Chevy Malibu 2.5l 4cyl. It made the car feel like it came alive, much better shift point’s especially on hwy previous to the trifecta performa…I’ll split this review into two distinct portions, as I believe they both are integral to your purchase and deserve to be equally represented. The tune: I think the one o…I have had a few of the Canyon's since they were reintroduced in 2015 (had 2015 SLT 4x4, 2016 SLT4x4 and now the wife drives 2018 Denali) and I have always hated the way it seems…This tune made my Colorado a totally different truck, it's completely transformed, no more lagging transmission, the engine now has power in the mid-range, and it's very quick cons…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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