2.5L Inline 5 Port Injected Naturally Aspirated Engine Single Program Only ECU

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2.5L Inline 5 Port Injected Naturally Aspirated Engine Single Program Only ECU
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Product Overview

APR 2.5L ECU Upgrade

APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 2.5L inline 5 cylinder engine. APR’s ECU upgrade is available in octane-specific variations and is conveniently flashed to the vehicle’s factory ECU through the OBD-II port without any physical modification to the factory ECU. APR’s EMCS functionality puts the control of the engine’s operation at your fingertips and allows for additional features and options to be installed to the OEM ECU.

The ECU’s Bosch Motronic engine management system is responsible for proper operation of the engine during constantly changing environmental and load conditions. With built in compensational data for environmental variables and varying load conditions, the factory ECU is far more complex and intelligent than units found in other vehicle makes and marques.

APR's Calibration Engineers spent months calibrating the engine management system, including many hours of chassis dyno development. With a thorough understanding of the ECU’s torque structure, APR’s Calibration Engineers properly increased engine load to produce more power and torque across the entire power band. APR’s ECU Upgrade optimizes ignition timing, lambda and more to produce higher output. Using APR’s proprietary high-speed data logging suite, the calibration team closely monitored the effects of these changes to help ensure an enjoyable driving experience.

APR’s ECU Upgrades provides an excellent leap in horsepower and torque while retaining OEM knock control sensitivity and other built in safety features. This results in an exciting and powerful upgrade, optimized for various fuel grades found around the world!

New Features Include:

  • Maximum Engine Speed Limit Raised to 6500 RPM
  • Left-Foot Braking Enabled for Simultaneous Throttle and Accelerator Input
  • Idle Raised to 750 RPM for Smoother Idle and Easier Initial Acceleration
  • Raised Standing Engine Speed Limit To 6500 RPM
  • Recalibrated Engine Braking Assist to Remove Overrun Hang
  • Speed Limiter Removed
  • Air-Fuel Ratio Calibrated for Maximum Power and Torque Delivery at Wide Open Throttle and Calibrated for Maximum Fuel Economy during Part Throttle Operation

Software Functions

  • APR's DirectPort Programming Technology
  • APR's EMCS Functionality
  • Fault Code Erase/Throttle Body Alignment
  • Security Lockout
  • Anti-theft


  • Exact OEM Calibration Stock Mode
  • 91 Octane Performance Mode
  • 93 Octane Performance Mode
  • Valet Mode

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