[funkymonkey1002]

Nice job! If the tcu were switched would full vdc be available?

 

[funkymonkey1002]

Did I just smoke crack or does that say a 1.657 sec 60 foot time and 3.323 second 0-60? Is this for real? With an auto box?

I'm going to have to do this someday, the 4eat should have always been VTD. BTW those are incredible times, I've been waiting for someone to show what an auto forester could do!

 

[funkymonkey1002]

Driving fast an MPT N/A I noticed that when I was suddenly lifting my foot from the gas pedal in a very tight corner, the tail would feel very light and this enabled me to easily flick the tail out and turn the corner with four wheels drifting pressing fully the gas pedal again.
This light feeling was fun but it was not a consistent behavior and I almost went off a gravel road when the tail proved too lightweight when I tried the same technique.

With the VTD conversion how much different the above may be?
Is the behavior more consistent? More difficult to flick the tail while braking and easier when accelerating?

Differences when braking INSIDE the corner? (The MPT is supposed to disengage more when braking...)

Any differences when hard braking when going straight ahead?

Thanks for the feedback!

I do the same thing lol. The MPT also shifts power rearward with more throttle, but seems to shift it forward when you left off, so it behaves like a fwd car in regard to lift off oversteer.

Does anyone know if the pinout for the VTD TCU is the same as the MPT TCU? I'm thinking if my trans goes I'll try a full VTD 4eat swap.

 

[funkymonkey1002]

In the MPT transmission the signal that controls the MPT engaging the rear drive is interrupted by inserting the fuse. In the VTD transmission, that signal is used to control the clutch pack that changes the power distribution from 45/55 to 50/50. So with the fuse in, the torque distribution is entirely based on the gear configuration, and not the clutch pack, giving you a constant rear bias.

At least this is my simplistic understanding of it. If someone knows more about how this works, feel free to chime in.

I'm pretty sure that the VTD basically behaves as an open diff without the clutch packs activated with a rwd bias when the FWD fuse is in. It would be like having dccd in open mode.

I think the best bet for non-canbus foresters to use VTD would be to use the 03/04 Baja XT tcu. They had the same driveline as the forester, but with VTD and sportshift in the 4eat. Just have to see if the baja TCU and the forester TCU have the same pinouts.

 

[funkymonkey1002]

Is there any front LSD for the 4EAT?
I though they are only available for the MT, not enough room in the front diff housing. Am I wrong?

look in g00fy's thread. He finally found one!

SH models are ALL MPT.

 

[funkymonkey1002]

Any chance you could pickup a baja XT tcu? I feel thats the "missing" key to getting it all to work right (baja XT in 03/04 had the same engine so the ecu signal should be the same, and has VTD in the 4eat).

 

[funkymonkey1002]

What difference did you see between the 03 and 04 tcu? The 03 look like it won't work at all? I saw a totaled baja XT the other day and was tempted to look into buying the whole thing for the transmission/tcu/sportshift etc, then realized I don't have a job and should probably worry about putting my forester back together first!

 

[funkymonkey1002]

Awesome! I was hoping the baja setup would be the answer!

So now it seems that you could take a baja transmission, shifter, and tcu and swap it into a forester with a stock ecu, and then you would have the VTD 4eat and sportshift! I'm glad my thinking was right as my transmission has seen better days, and it looks like i'll be able to throw in a VTD transmission after all!

What is the whole setup you're running now (ie what year forester, what year ecu and tcu and what transmission/vtd?). I was thinking 05+ might be more work due to the immobiliser, but i guess the tcu doesn't have anything to do with that, only the ecu.