THE BENEFITS OF CONTROLLING FORD’S TiVCT WITH INFINITY
The Infinity ECU was the first programmable EFI system to deliver programmable variable cam timing (VCT) for the Ford Coyote TiVCT system. By controlling the Coyote’s VCT on all four camshafts, tuners are able to create more peak power over no VCT or when tuning only intake variable cam tuning, and significantly more mid range. The following dyno plots were performed on a stock Ford Coyote engine, on the engine dyno at CPR in Gardena, CA, where tuning the intake and exhaust VCT netted a peak gain of 42.3 HP @ 6500 RPM and a mid range gain of 109.3 Horsepower @ 3900 RPM. The Coyote’s torque gains are even more pronounced, showing a peak gain of 85.8 lbs/ft at 4,400 RPM, with the largest torque gain of 149.9 lbs/ft occurring at 3,700 RPM.
The engine tested was a 100% bone stock take out from a Mustang GT. The power and torque data shown is representative of optimized cam timing and not just sending the cams to their max advance/retard positions. The purpose of the testing we did was to show the changes in torque/power output based purely on optimizing airflow by varying both the intake and exhaust cams while maintaining the same AFRs and using the same ignition timing. We felt this was prudent as some competitor systems that also have EMS solutions for the Coyote aren’t able to do variable cam control and have attempted to downplay its real benefits. We feel these dyno results pretty clearly show how beneficial the Coyote variable cam system is.
As is shown, we first ran the engine with both the intake and exhaust cams at their resting positions (fully retarded for intake and fully advanced for exhaust). Fueling was adjusted to reach target AFR and a base timing value was established. We then started tuning the intake cams only and through a series of pulls, found optimized cam advance values that netted the best increases in torque/power output. We repeated this same process for the exhaust cams while also moving the intake cams. In each iteration, fueling was adjusted to account for increases in airflow in order to reach our target AFR. This is the typical process for variable cam tuning on any engine.
We ourselves were surprised by the results – especially the gains made by retarding the exhaust cams. We’ve done a lot of variable cam motors in the past and are used to seeing sizeable gains by advancing the intake cams. In most cases however, moving the exhaust cams has usually netted a decrease in torque output as there is fuel/air charge dilution by the exhaust gases. It’s common that variable exhaust cams are used much like EGR for emissions purposes by the OEMs so it was surprising when the Coyote made huge gains by varying the exhaust cams. It was very evident to us that varying both sets of cams was vital in getting the Coyote to its full power potential.
AEM Ford 5.0L Coyote Plug & Play Adapter Harness (AEM PN 30-3812) for its Infinity programmable standalone ECU is for racing engines which are using the Ford Racing Controls Pack (FRCP). AEM’s Coyote Plug & Play harness provides racers and engine builders who already have or plan to purchase an FRCP with the ability to quickly install the Infinity ECU on a Coyote engine (around 30 minutes).
A Complete Standalone ECU for the Ford 5.0L Coyote Engine The Infinity ECU combines with the Coyote Plug & Play adapter harness to retain full control of the engine’s TI-VCT variable cam timing control and Drive-by-Wire (DBW) system. The Infinity ECU is to our knowledge, the first standalone programmable ECU to deliver full control of all four of the Coyote’s variable valve camshafts and deliver programmable control of the Coyote’s drive-by-wire system. This capability provides tuners with the ability to take full advantage of the engine’s midrange power potential through the adjustment of all four camshafts anywhere in the RPM range, and create two drive-by-wire profiles for rain maps, pit lane limits and more. The Infinity Coyote adapter harness is compatible with factory sensors and injectors for simplified start up using the supplied base calibration on most applications (may vary based on engine set up and forced induction). AEM’s adapter harness also eliminates the restrictive factory mass airflow sensor (MAF) and airbox, making it an ideal harness solution for forced induction applications. Other key racing features include multiple boost control strategies, programmable nitrous control, on-the-fly map switching, programmable four-wheel speed traction control, launch control, flex fuel and multi fuel capability. It utilizes airflow (VE) based tuning, has up to 64GB data logging capacity and can transfer data at up to 480Mb/second. Its enclosure is sealed and suitable for engine bay mounting.
Plug & Play Harness with Expansion Port AEM’s sealed, weatherproof Plug & Play harness (sold separately from the ECU) includes dual Lambda connectors and adapters to easily convert to Bosch 4.2 LSU UEGO sensors, an AEMnet connector for communication with other AEMnet enabled devices and an auxiliary connector with a High Performance DTM-Style 12P connector for adding common aftermarket sensors including fuel pressure, air inlet temperature, MAP, boost control solenoid and ethanol content. The expansion port also includes a sensor ground, 5v reference, power from relay and high side output for activating a solenoid, and switched inputs for auxiliary radiator fan, boost target and no-lift shift. Terminated harnesses for AEM 4-Channel Ignition Coil Drives are integrated into the Coyote adapter harness, and an additional High Performance DTM-Style connector is included that allows users to wire in the fuel pump for control using the Infinity ECU.
Ford 5.0L Coyote Plug & Play Harness with Expansion Port
Once you have determined which Infinity ECU will best support your Ford 5.0L Coyote M/T engine, you will need to purchase the Coyote Plug & Play adapter harness (PN 30-3812). AEM’s Plug & Play harness for 5.0L Coyote engines includes Wideband O2 connectors and adapters for converting to Bosch 4.2 LSU UEGO sensors, an AEMnet connector for communication with other AEMnet enabled devices and an auxiliary connector with a High Performance DTM-Style 12P connector for adding common aftermarket sensors including fuel pressure, air inlet temperature, MAP, oil temperature and ethanol content sensor. The expansion port also includes a sensor ground, 5v reference, 12v power from relay and high side output for activating a relay or solenoid, a low side output for boost control and analog inputs for mode switch and no-lift shift. Harnesses for AEM 4-Channel Coil Drivers are integrated into the adapter harness, and an additional High Performance DTM-Style connector is included to allow users to wire the fuel pump to the Infinity for control of the unit.
The Infinity EMS delivers high-end engine control for the racing masses at a fraction of the cost. The Infinity Series 7 for 5.0L Ford Coyote race engines uses airflow-based tuning models to simplify start up and speed up the tuning process by eliminating many of the lookup and trim tables (Correction Tables) necessary in previous generation ECUs.
200MHz Processor and Real Time Operating System
Late model vehicle ECU’s all run on faster processors. The Infinity ECU is built around a latest-generation 32 bit floating point 200MHz automotive processor and Real Time Operating System (RTOS), which is capable of processing 400 MIPS (millions of instructions per second). By comparison, common competitive systems typically use 20MHz to 50MHz processors. To our knowledge, the Infinity ECU currently has the fastest processing speed of any aftermarket Motorsports ECU available. This allows the Infinity to do more, faster, in a more stable programming environment.
- The Infinity’s 200MHz processor and RTOS makes the Infinity more responsive, for a better driving experience
- The Infinity’s 200MHz processor and RTOS allows for more accurate ignition timing, which enables an engine to create more power
- The Infinity’s faster processor allows it to perform more computational features with no sacrifice in processing performance
- The Infinity’s RTOS ensures strategic processing with optimized load balancing. This means that tuning one feature will not affect the performance of another feature
- Airflow model based (VE) tuning
- ECU Set Up Wizard simplifies start up
- Flex Fuel compatible
- Multi fuel capable
- Programmable Drive by wire
- Variable valve control
- Multiple boost control strategies
- Programmable nitrous control
- Map switching (on-the-fly)
- Dual Internal wideband UEGO air/fuel controller
- Dual knock sensing circuits
- Data logging up to 64GB, up to 100 channels at 1KHz
- Outputs to 3rd party dashes and data loggers
- Industry leading data transfer speed (up to 480Mb/sec)
- Integrated engine protection strategies
- Sealed enclosure and IP67 rated comms ports
- 2011-2016 Ford Mustang 5.0L Cotoye