Subaru Drive By Wire vs Cable Throttle
Updated: Aug 9, 2019
One of the most common questions we receive at iWire is "Is my engine Drive by Wire or Cable Throttle," so we've decided to post the definitive list! This list is also useful if you are looking into an engine swap so you can confirm which setup your new engine has.
What is it?
Cable Throttle - If your car is cable throttle that means there is a mechanical cable that runs direct from the pedal to the throttle body to open (to accelerate) and close it (to slow down).
Drive by Wire (DBW) - If your car is DBW that means there are electrical wires that connect the pedal to the throttle body via the engine computer (ECU) so when you push the accelerator pedal the ECU interprets the signal and tells the throttle body to open or close.
Which Cars Are Cable Throttle?
Baja Non Turbo - All model years
Forester Non Turbo - 2004 and older
Forester XT Non Turbo - 2003 and older
Legacy GT Non Turbo - 2004 and older
Legacy Non Turbo - 2004 and older
Subaru Impreza Non Turbo - 2004 and older
USDM STi - 2003 and older
USDM WRX - 2005 and older
JDM WRX and STi - 2006 and older
Which Cars Are Drive By Wire?
Baja Non Turbo - None
Baja Turbo - 2004 to present
Forester Non Turbo - 2005 to present
Forester XT Turbo - 2004 to present
Legacy GT Turbo - 2005 to present
Legacy "UL Model" Non Turbo - 2004 Only
Legacy Non Turbo - 2005 to present
Subaru Impreza Non Turbo - 2005 to present
USDM STi - 2004 to present
USDM WRX - 2006 to present
JDM Forester Turbo - 2004 to present
Tribeca - 2006 to 2014
iWire has also created a solution to one of the most common issues when swapping a car from cable throttle to DBW - the pedal! Check out our Drive By Wire Pedal Adapter Bracket.
Cable Throttle to Cable Throttle: Going from cable throttle to another cable throttle engine is generally very simple.
Cable Throttle to DBW: Swapping your engine from cable throttle to drive by wire is a straight forward process with our merge services and a pedal adapter bracket. It can be slightly complicated when doing DIY.
DBW to Cable Throttle: Going from drive by wire to a cable throttle setup can be done but does create a few issues with the pedal and cruise control.
DBW to DBW: Drive by wire to drive by wire swaps allow you to keep your current pedal set and cruise control working.
iWire also sells replacement DBW Plugs: