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Scion tC 1G Drivetrain & Power Engine and transmission discussions...

Automatic Transmission Upgrade Info - ZPI SOLUTION

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Old Nov 2, 2005 | 09:51 PM
  #21  
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Originally Posted by David616
Count me in.

Do we know of a price range yet for an E.S.K. for the tC?
Well turboeast.com is selling their Lexus one for $210. They don’t have one specifically for the Tc yet, but I think it’s compatible
Old Nov 2, 2005 | 10:13 PM
  #22  
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Let's hope it is compatible...or should we just wait for them to make a specific E.S.K. for the tC?
Old Nov 2, 2005 | 10:31 PM
  #23  
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As I understand it...it will work. I should receive the ESK in the next few days.

Well, here is the info on the Electronic Shift Kit from their site - Per the Lexus IS300

The TurboEast ESK eliminates sloppy shifts, hanging on the rev limiter, and allows transmission to shift with up to 320 rwtq with no internal transmission mods. Includes new and improved circuitry and a aluminum enclosure for improved heat dissipation.


This is the Valve Body Upgrade


The TurboEast Valve Body Upgrade cleans up the sloppy and slow stock shifting. Shifts are firmer, faster and more responsive. Developed for turbo, supercharged, naturally aspirated and nitrous applications. All stock functions along with E-shift are retained like stock.


And for the really power hungry (axle bending problem now - same as manual guys)


The first power failure point for this transmission is the sprag also know as a one way bearing. This upgrade should allow your tranny to hold over 500 rwtq. The next failure point in the stock clutch packs. Replacing of both the sprag and clutch packs will hold over 600 rwtq.
Old Nov 2, 2005 | 10:46 PM
  #24  
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How would installation come about?
Do you know what the E.S.K. consists of?
Old Nov 2, 2005 | 10:48 PM
  #25  
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its a black box, my version had an on/off swithc, but newer ones may not.

It was a box w/ a long cable and a few wires to hook up as I mentioned above.

power, ground, tps, rpm, load, line pressure in, pressure out
Old Nov 2, 2005 | 10:56 PM
  #26  
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Originally Posted by mattssi
its a black box, my version had an on/off swithc, but newer ones may not.

It was a box w/ a long cable and a few wires to hook up as I mentioned above.

power, ground, tps, rpm, load, line pressure in, pressure out
How did this improve your IS300?

Then how much did the valve body upgrade improve?
Old Nov 2, 2005 | 11:24 PM
  #27  
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It definitely helped w/ NA. The sloppy shifts turned into nice, crisp shifts. Felt more like a sport sedan rather than a luxury type car. However, when I had nitrous (100 shot) or the turbo, it didn't work as well as I needed (320rwhp). This is why I sold it and got the valve body. I drove down to Toyomoto in Miami, and had that done for $250. The "down side" is that the shifts are always a little harsher, but nothing crazy. This is what fixed all my shift issues and what even got my car to chrip 2-3, and even 3-4 sometimes on an Auto. This is at full throttle/boost.
Old Nov 3, 2005 | 12:01 AM
  #28  
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Originally Posted by mattssi
It definitely helped w/ NA. The sloppy shifts turned into nice, crisp shifts. Felt more like a sport sedan rather than a luxury type car. However, when I had nitrous (100 shot) or the turbo, it didn't work as well as I needed (320rwhp). This is why I sold it and got the valve body. I drove down to Toyomoto in Miami, and had that done for $250. The "down side" is that the shifts are always a little harsher, but nothing crazy. This is what fixed all my shift issues and what even got my car to chrip 2-3, and even 3-4 sometimes on an Auto. This is at full throttle/boost.
Cool. I'm going to see what the ESK does as a trial for them...if not what I want, then go valve body upgrade like you did. wreckedtc is doing the valve body upgrade and give a report on that. Luck dog...he is close and they need a test car.
Old Nov 3, 2005 | 07:10 PM
  #29  
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NICE! Take some pix when you get the E.S.K and fill us in as to what the install involves. Im very interested in this MOD. Hope a TC specific one is developed ASAP.
Old Nov 5, 2005 | 03:07 AM
  #30  
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Yea please keep us updated. Im very interested to see how this mod turns out as well.
Old Nov 5, 2005 | 03:25 AM
  #31  
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chirp in an auto?? That is my dream !!!
Old Nov 5, 2005 | 05:29 AM
  #32  
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A lot of good info about this. I'm definitly interested in this!
Old Nov 5, 2005 | 08:12 AM
  #33  
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$210 doesn't seem to bad for the is300 version. I want to see some pics though.
Old Nov 5, 2005 | 04:12 PM
  #34  
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May I ask, How complicated this install shall be?
Old Nov 5, 2005 | 10:23 PM
  #35  
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sciondad told me it was as easy as installing a head unit..
Old Nov 6, 2005 | 04:17 PM
  #36  
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Its only a few wires. If you've installed a SAFC or a stereo - its along those lines. Plus, if you have aplug and play emanage harness, it makes it even easier I would think
Old Nov 6, 2005 | 05:10 PM
  #37  
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so where do i get it??
Old Nov 6, 2005 | 05:55 PM
  #38  
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On the topic of AT Upgrades, have any of you Auto guys changed your Transmission Fluid? I purchased Amsoil Synthetic ATF but ive been holding off to find a DIY guide to help me. If I get no feedback I guess i'll just spend a few bucks and have a shop do it.
Old Nov 6, 2005 | 07:03 PM
  #39  
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what would be the difference in performance between your stock AT fluid and the synthetic? Also...does anyone know how often we're supposed to change the tranny fluid?
Old Nov 7, 2005 | 01:42 AM
  #40  
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I do alot of torque braking .. i would be good to know when you are supposed 2 change.



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