Author Topic: 4EAT diff lock mod - works on JDM Foresters (ST/B - STI)  (Read 1509 times)

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Offline jessef

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  • Location: Vancouver, BC
  • Ride: 99 Forester ST/B Type A
4EAT diff lock mod - works on JDM Foresters (ST/B - STI)
« on: July 31, 2015, 10:06:13 AM »
I've successfully done the 4EAT diff lock mod on a few JDM Foresters.  98/99/00 ST/B and STI. This also works on JDM auto Legacy/Impreza's.

It's probably the best mod you can do on an auto Subaru. Effectively doing away with the crazy torque steer we get on the higher HP JDM's.

About $30 in parts and just over an hour to install.

Props to previous user's who have done this years ago. It's been around for a while already http://www.rs25.com/forums/f8/t99075-4eat-diff-lock-switch-handbrake-mod-torquemada-lite.html

The only difference between US and JDM Subaru's is the pin out on the ECU. For JDM's it's the white/green wire that you splice into.  Pin 15 in connector B54.

I did cut into the center console using a small dremel tool and put my switches there. They have been since labeled. The left is lightbar and right 50/50 auto lock.












Offline strykr

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Re: 4EAT diff lock mod - works on JDM Foresters (ST/B - STI)
« Reply #1 on: July 31, 2015, 11:56:47 PM »
Been wanting to do this with my LGT but haven't had a chance since I need to fix my overheating issue.

Thanks for reminding me to go get the parts for this project though!

Offline JohnnyCanuck

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Re: 4EAT diff lock mod - works on JDM Foresters (ST/B - STI)
« Reply #2 on: August 29, 2015, 08:01:10 AM »
Never heard of this, going to give it a go.
Turbo Schmurbo. - Ghandi