aFe 2006+ Subaru Forester H4 2.5L Pedal 2 Metal Throttle Enhancer

More Response, More Power, No ECU Modification for the 2006-2011 Subaru Impreza

The aFe throttle response controller 77-20017 eliminates drive-by-wire throttle delay by enhancing the pedal input signal, delivering a more immediate and progressive throttle response without modifying engine calibration. Engineered specifically for the 2006-2011 Subaru Impreza, this device connects directly to factory wiring without cutting, splicing, or programming tools. Multiple selectable response modes let you dial in Sport, Race, or Eco settings to match your driving style. The 77-20017 is fully reversible and can be removed in minutes to return the vehicle to factory calibration at any time, making it an ideal choice for leased vehicles or builds that require occasional stock configuration.

Key Features

• Plug-and-play installation, no cutting or splicing of factory wiring
• Fully reversible, restores stock calibration when removed
• Multiple selectable power or response levels
• No laptop, software, or custom tune required
• Compatible with other bolt-on performance modifications
• Compact, durable housing designed for under-hood temperatures
• Backed by aFe Power limited manufacturer warranty

Fitment

Specifications

What's Included

• aFe throttle response controller (77-20017)
• Wiring harness adapters
• Mounting hardware
• Installation instructions

Frequently Asked Questions

No. The 77-20017 is a true plug-and-play device. Connect it to the factory harness as directed in the installation instructions and select your desired mode if applicable. No software, laptop, or dealer interface is required.

Under the Magnuson-Moss Warranty Act, a dealer cannot void your warranty solely because you installed this device. They must demonstrate it directly caused a specific failure. Because this module is fully reversible, you can remove it before any scheduled dealer service to avoid any potential discussion.

Yes. One of the main advantages of the 77-20017 is its fully plug-and-play, reversible nature. Disconnect and remove it before any dealer visit to restore the vehicle to completely stock configuration.

Yes. The 77-20017 works alongside other bolt-on modifications such as a cold air intake, exhaust, or intercooler upgrade. If you are running a full custom ECU tune, consult your tuner before stacking this module to ensure there are no conflicts with the base calibration.

Gains vary significantly by vehicle, engine, and supporting modifications. aFe Power publishes dyno data for select platforms. Contact us or visit the aFe Power website for platform-specific performance data on the 77-20017.

In stock and economy modes, some users report neutral to slightly improved fuel economy from improved combustion efficiency. In performance modes, fuel consumption increases with the additional power output. Your real-world result depends on driving style.

The 77-20017 is designed to allow mode switching without damaging the engine or drivetrain. However, aFe Power recommends switching modes during a steady cruise rather than under hard acceleration or high load conditions for best results.

Legality varies by state. In California, verify CARB Executive Order compliance before purchase. In all other states, this device is legal for on-road use. Confirm local regulations for your specific application if emissions testing is required in your area.

Installation Overview

1. Ensure the vehicle is parked, key is out of ignition, and allow the engine to cool
2. Locate the factory harness connection point as specified in the included instructions
3. Unplug the factory connector and plug the 77-20017 harness adapters in-line
4. Route the module housing to a clean, secure mounting location away from heat sources
5. Secure the module with the supplied bracket or hook-and-loop mount
6. Reinstall any panels or covers that were removed for access
7. Turn the key to the accessory position, select your desired power mode if applicable
8. Start the engine and confirm normal idle and throttle response before your first drive

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.