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Old 09-27-2013, 10:30 AM
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longassname longassname is offline
Just some dude.
 
Join Date: Sep 2002
Location: Miami, FL
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Significant Technical Input
Re: ECU tune Transmission control unit?

Needforspeed,

Do you have any JDM TCUs to sell? I'd like to know the cash price if you do and how many. Also, I understand you are tinkering with transmissions, I have some hard to come by upgrade parts I would possibly trade if you wanted.


Quote:
Originally Posted by NeedForSpeed View Post
Jim,

The transmission is a 4EAT, four speed electronic automatic transmission. The gear ratios are 2.785, 1.545, 1.0, 0.694. Fourth gear, less than 1.0, is an "overdrive" gear. It could be said that the SVX has a three speed with an overdrive 4th gear.

You also have a locking 'TC' torque converter. The Subaru 4EAT is programmed to lock the torque converter in fourth gear. When the torque converter locks, the rpm will drop about 200 rpm. You can feel the lock, and you can see the rpm drop on the tach. It feels like a shift
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