ProEFI Pro128 ECU View larger

ProEFI Pro128 ECU

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Injectors12 Peak n Hold – with calibratable peak time. 6 – 6/2 amp, and 6 3/1 amp.
TPSYes – Adaptive
Coolant TempYes
Air TempYes
Map SensorYes – Unlimited Range
Idle ControlPulse Width and Stepper motor – Adaptive
Wideband O22 Built in UEGO controllers (External capable)
CamYes – Hall/VR capable
CrankYes – Hall/VR capable
Variable CamYes 2 cam capable
Knock Channels2 Programmable frequency and event with individual cylinder notification
Flex Fuel CapabilityAdd a Flex fuel sensor, and the computer automatically adjusts fuel, timing, and boost based on Ethanol content!
Nitrous Control4 stages multiple event trigger control range. V.E. based fueling****
Boost ControlMultiple control strategies.***
Traction ControlMultiple control strategies.***
Fuel Pump ControlYes*
Analog Inputs34* Fuel Pressure monitoring and feedback correction, Oil Pressure, Exhaust Backpressure Feedback and correction, and much more.
Low Side Outputs10 total – 8-10 amp capable – 2-2 amp capable*
TachYes – Software configurable
Digital Inputs8 channels – Fully programmable pre configured
High Current Bridges3 channel sets – Used for Stepper motor control, or Electronic Throttle Control
Speed Inputs2
Drive By WireYes
Fault Coding SafetyYes**
MIL (CEL)Yes – Malfunction indicator with fault codes
Main Relay ControlYes
5v Ref2 locations
Sensor Grounds2 locations
Key Switch PowerYes
Permanent PowerYes
Battery BackupNo
Chassis Ground4 Locations
Can Channels2 Channels
Serial ConnectionYes*****
RS485 ConnectionYes*****
Internal MemoryLimited to Fault logic
USB Direct ConnectionNo
Laptop ConnectionUSB


Logging with PC attached included on all ECU’s. If logging without the PC connected is required, you must purchase one of the external loggers. This module simply connects through the CAN bus and is configurable, however it is pre-configured by ProEFI for common channels to be logged.

*The amount of available channels is dependent upon the use of pre-configured I/O such as Fuel pump, TPS, etc…

**Fault coding is a strategy used by the O.E. manufacturers. This strategy allows for the capability to trigger faults and fault actions. Features include but are not limited to multiple safety strategies for limiting boost and shutting off nitrous control under lean conditions. Contact us directly for more information. 

***Multiple Strategies are configurable based upon time or speed. Contact us directly for more information.

****V.E. stands for volumetric efficiency. This is a strategy incorporated by the O.E. manufacturers to more accurately determine the fueling requirements of the engine. There are several advantages to using this method. Contact us directly for more information.

*****These communication ports are dedicated for the use of future external peripherals to be announced by Professional EFI Systems at a later date.

Adaptive – Is a term meaning that particular feature will self tune itself constantly. This is another strategy used by the O.E. manufacturers to help keep the vehicle in a constant state of tune for hundreds of thousands of miles.