AEM Infinity PNP Harness - Ford Coyote Engines using Ford Engine Harness

Vendor: AEM




The Infinity ECU for the 2011-2014 Ford Coyote engine has been used successfully in racing since its release a year ago, including on JPC Racing’s 2x record-setting Coyote Turbo drag car that set a new record after switching to the Infinity its first time out. It delivers complete tuning control including Ti-VCT variable cam timing (four cams), Drive-by-Wire (plug included on harness for quick integration of the Ford Drive-by-Wire pedal assembly), active CAN controls, dual on-board Lambda AFR control, dual knock control and speed density fueling to eliminate the MAF. A base map is available for the Coyote for quick start up.

A robust fuse and relay panel is integrated into the 30-3813 Coyote harness adapter. It includes relays for the radiator fan, coils, injectors, Infinity ECU, starter and fuel pump, and flying leads for starter, ECU controlled fuel pump, clutch-switch activated starter safety lockout, ignition switch and tachometer. CANbus support is included for the Electronic Power Assist Steering (EPAS) when using the Ford Racing M-3200-EPAS Boss 302R electronic steering rack, with minor additional wiring.

Two Bosch 4.2LSU sensors are required for Lambda feedback control (PN 30-2001). A MAP sensor (PN 30-2130-50 3.5BAR) and air inlet temp (AIT) sensor (PN 30-2010 3/8” NPT) is required for conversion to speed density. MAF is not supported. AEM offers higher pressure MAP sensors for high boost applications.

AEM recommends the purchase of its Infinity Auxiliary Sub Harness (PN 30-3510-00) for easy installation of the MAP and AIT. This sub harness connects to a connector with a High Performance DTM-Style 12-pin connector for adding common aftermarket sensors including fuel pressure, oil pressure, 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.

The 30-3813 Coyote wiring harness includes a connector to enable control of the Ford Racing Boss 302 Alternator Kit (Ford PN M-8600-M50BALT). Users who do not have this alternator may need to purchase it for proper connection.

The Drive-by Wire pedal assembly is not included with the 30-3813 Coyote wiring harness. For Drive-by-Wire integration the Ford pedal assembly (Ford PN BR3Z-95836-D) is required.

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.

A Complete Standalone ECU for the Ford 5.0L Coyote Engine
The Infinity ECU combines with the Coyote Plug & Play engine harness adapter 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 Engine Harness Adapter 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 Engine Harness Adapter with Expansion Port
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 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




Infinity’s airflow model-based systems greatly reduce the amount of time it takes to set up and tune an engine by eliminating many of the lookup and trim tables (correction tables) necessary in previous generation ECUs. The Infinity’s airflow based, or volumetric efficiency (VE) based models calculate an engine’s requirements in real time based on an advanced algorithm that has various modes for calculating air flow. Once the user inputs an engine’s basic parameters (displacement, cylinders, ignition type, and firing order) and methods of calculation for airflow and ignition they can begin setting the engine’s VE table in the software.

InfinityTuner is optimized for speed and performance. The software has the power to control a multitude of features found in today’s modern racecars, and features an advanced tuning Wizard to reduce set up time. An ECU Setup Wizard takes complex calibration setup work and simplifies it through a smart interface that features tabs for quick set up of vital engine functions. Each tab includes a description of the function.

InfinityTuner software is highly flexible. It allows you to choose from multiple strategies for boost control, idle control, traction control, charge air temp blend, launch control and more.

All controls in the Infinity ECU are synched to logged data which allows users to edit calibration data during log playback to minimize tuning time. AEMdata, AEM’s advanced data logging analysis software is also included for reviewing data logs.

The Infinity ECU calculates injector pulsewidth in units of 1/10th of a microsecond (0.0000001 second). Individual cylinder fuel trim is included and user adjustable.

InfinityTuner software features a 3D ignition trim map (coolant and air temp based), and its back-end timing code is tested to 100,000 RPM. Individual cylinder ignition trim is included.

Flex fuel compatibility is included, and the Infinity is able to make automatic adjustments for ethanol content in the fuel with the addition of an ethanol content sensor (sold separately).

The Infinity has the ability to run two separate fuel types simultaneously through staged fuel injection

The Infinity Series 7 ECU can control drive by wire throttle bodies and includes auto calibration for DBW sensors. It includes idle control, an optional drive by wire rev limiter (for use as a launch limiter, holding limiter or in conjunction with other rev limiters) and necessary failsafes based on redundant sensor inputs.

The Infinity ECU uses a coolant temp based idle control model. It includes an RPM vs. Engine Speed Rate idle decel feature that provides accurate control of the IAC and allows for adjustment of engine braking. The Infinity’s idle TPS offset provides smoother low idle operation when necessary, like driving in the pits or return lane following a pass.

Choose from time, gear, vehicle speed, switch-based or other boost control strategies. The Infinity’s boost control includes two 2D base duty tables and two 2D boost target tables. The second tables can be used as a trim, and users can choose from multiple strategies including IAT, MAP, Baro (kpa), throttle %, flex fuel content, boost target and more. Please visit our Forum for an in-depth review of the Infinity’s boost control capabilities.

The Infinity’s software allows you to run a single-stage wet or dry nitrous set up (four-stage available soon). This feature includes nitrous timing delay to account for nitrous bleed out and can be set up for water/methanol injection tuning. Four stage nitrous will be upgraded for free for existing Infinity users when it becomes available.

Set base duty, limit and VVC cam target for up to four cams through the InfinityTuner Wizard. Users are able to achieve a VVC cam target by setting Cam 1 base timing and base duty cycle % in a 2D table, and the software features a 1D base duty % table that controls the base duty cycle for the VVC output, which is tunable based on the VVC target.

The Infinity includes up to four separate ignition maps, four separate Lambda maps and two separate VE maps with independent values. Using AEM’s 12 Position Trim Pot, this powerful feature delivers many valuable tuning options including:

  • Multiple maps for multiple track conditions (practice map, rain map, qualifying map, FTW map)
  • Change boost target
  • Change Lambda target
  • Change ignition target
  • Tie boost, Lambda and ignition targets together and change them all
  • Ideal for test mapping during tuning
  • Change boost base duty
  • Control PWM switches (like water/methanol injection)
  • Choose between 2 VE tables for VVC or when restrictors are in place
  • Blend between flex fuel ignition maps
  • Blend by cam position and gear

Multiple engine protection strategies are incorporated into the Infinity ECU. Available strategies include:

  • MAP (create limp mode using Assumed Pressure Ratio table to compensate for pressure if sensor fails)
  • Overboost (boost fuel cut until boost/throttle decreases)
  • Fuel pressure (injector flow compensated for variations in pressure, sensor required)
  • Oil pressure (trigger light or limit RPM if pressure drops below set value, sensor required)
  • RPM (rev limiter)
  • Coolant temperature, Temp vs. RPM (fuel and ignition cut, sensor required)
  • Knock control with feedback
  • Lean protection (fuel and ignition cut)

The Infinity’s diagnostics software can be configured to constantly monitor signal and current quality to alert the user of a potential issue before it creates the potential for engine damage.

Dual Bosch wideband controllers are built into Infinity Series 7 ECUs. This provides highly accurate closed-loop AFR targeting and enables the sensor diagnostics in the ECU to determine the operational condition of the sensor.

Infinity’s logging feature supports 2 different file systems. A custom file system option will support 100 channels at up to 1 KHz using a high-performance USB flash drive (sold separately). A standard FAT file system will support 10 channels at up to 1KHz, 20 channels at up to 500Hz or 100 channels at up to 200Hz. The Infinity includes a 4GB USB memory stick and the user can replace this with up to 64GB. Additionally, the user can also log directly to the PC at up to 500Hz when connected.

AEMdataprovides an advanced interface for viewing the log files generated by the Infinity ECU.

Dual knock signal conditioning circuits allow for precise measurements of knock levels. The Infinity can utilize both Piezoelectric and Flat Response type knock sensors.

The Infinity ECU is constructed using automotive-rated components designed to withstand the harshest racing environments. Its enclosure and connectors are sealed to make it suitable for engine bay mounting. An advanced wear-leveling strategy for flash memory ensures a lifetime of reliable performance.

The Infinity ECU is able to transfer data via USB at up to 480 Mb/second. It features a fully-sealed IP67 communications connection system.

Infinity is AEMnet enabled and will communicate with another AEMnet-equipped device. It is able to output to 3rd party dash/logger devices (not all 3rd party dash/logger devices may be supported). Call AEM technical support at (310) 484-2322 for more information.

Certain Advanced Tuning functions, hardware outputs, and sensor inputs are available for the Infinity Programmable ECU. The Infinity ECU's Advanced Tuning Package is available at no charge for a limited time. Please contact an Authorized AEM dealer or call AEM Performance Electronics at (310) 484-2322 for more info.


  • Airflow model based calculations
  • VE-based engine startup
  • Multi-fuel capable
  • Flex fuel compensated – fuel, ignition and boost with blend
  • Multiple boost control strategies (time, gear, vehicle speed, switch and more)
  • Drive by wire control (dual H-bridge channels)
  • 2-step and 3-step programmable launch control
  • Anti-lag and rolling anti-lag
  • Programmable traction control, up to 4-wheel speed
  • No-lift shift
  • User configurable soft-cut rev limiters
  • User configurable anti-lag
  • Map switching (4 Separate ignition maps, 4 separate Lambda target maps, 2 separate VE tables)
  • Single stage wet or dry nitrous control
  • Integrated engine protection strategies
  • Target Lambda table, 10x10
  • Open-loop fuel pressure compensation
  • O2 lean-out protection
  • 2-channel adaptive knock control
  • Configurable coil dwell (RPM, voltage and load based)
  • Individual cylinder ignition trim (RPM based)
  • Individual cylinder fuel trim (RPM based)
  • 3D ignition trim maps (coolant and air temp)
  • Real-time sensor diagnostics
  • Ignition table, 20x20