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Top 2GNT Technical Performance/Engine Auto Trans- A604 topic #2727
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Subject: "running without a tcu?" Previous topic | Next topic
ajna_starApr-01-04 03:36 PM
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#2727, "running without a tcu?"




          

that ebay shift-tronic thing said you can use it without actually using the tcu... so im asuming it controls the sollenoids by itself.

#1 would that be SAFE

#2 wouldnt that remove all the annoying restrictions the tcu puts on out tranny?


2005 Corolla XRS
2ZZ 6-speed

  

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Replies to this topic
RE: running without a tcu?, jsupetran, Apr-01-04 04:07 PM, #1
RE: running without a tcu?, ModeratorCorbin, Apr-02-04 05:09 AM, #2
      RE: running without a tcu?, mcgyvr, Apr-02-04 05:38 AM, #3
           RE: running without a tcu?, ajna_star, Apr-02-04 08:07 AM, #4
                RE: running without a tcu?, mcgyvr, Apr-02-04 01:46 PM, #5
                     RE: running without a tcu?, ajna_star, Apr-02-04 04:38 PM, #6

jsupetranApr-01-04 04:07 PM
Member since May 04th 2002
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#2728, "RE: running without a tcu?"
In response to Reply # 0




          

off-topic: I got the email from the seller the other day and he said he is putting more on the auction in two weeks.

I hope dsmeclipse gets his installed and gives a review.

-------jezreel
hrc stage 2, sfmu, ml, prokits, egt, boost gauge, apexi tt, turbo xs rfl, haydans tranny cooler, costum dp, dr. uber groundwires, dynotune fp gauge. gst muff, turbo spoiler

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!
thanks for www.kaptainmyke.com for the sig hosting emoji

  

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ModeratorCorbinApr-02-04 05:09 AM
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#2731, "RE: running without a tcu?"
In response to Reply # 1


          

I'd be worried about other problems cropping up when you control the solenoids yourself and disconnect the TCU. You could imagine that the stock TCU allows more slip when the fluid is cold, goes into limp mode if a problem is detected, shifts at redline if you forget, pulses the solenoids so they don't burn out, and other random things. The TCU and ECU also talk over a couple different lines. They discuss things like timing retard while shifting and who knows what else. Now, could you remove the TCU, install the controller, remove the AT ECU, and install a MT ECU? Would that let you redline at 7500 (or whatever it is for MT)? There are alot of questions that need answering. Most of it boils down to someone just buying it and testing.

Corbin

'95 ESI-T
HRC+FMIC+ETC...



Gimme fuel...Gimme fire...Gimme that which I desire

  

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mcgyvrApr-02-04 05:38 AM
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#2732, "RE: running without a tcu?"
In response to Reply # 2


          

DONT RUN WITHOUT A TCU.......
for all the reasons corbin said and more.
you will burn through it MUCH MUCH quicker.

1998 dodge avenger 4 cyl AT
Mods are:
Not enough

  

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ajna_starApr-02-04 08:07 AM
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#2735, "RE: running without a tcu?"
In response to Reply # 3




          

so even running with a TCU & this thing... its controlling the sollenoids by itself... so its not pulsing them & your gonna burn them out quicker?


2005 Corolla XRS
2ZZ 6-speed

  

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mcgyvrApr-02-04 01:46 PM
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#2738, "RE: running without a tcu?"
In response to Reply # 4


          

yes, probably, no one really knows but the guy who made it.
If he wants to sell more he should come on here and talk it up. give us the info.

But yes the TCU takes in to account alot of variables before it decides to shift anything. like clutch volume indexes,etc.. I thought it said it was only for emergencies or when the car is in limp mode from a stupid sensor. thats the only time I would use it without the TCU.

I still think that the autostick mod is cheaper and easier and the TCU is controlling shifts correctly.

1998 dodge avenger 4 cyl AT
Mods are:
Not enough

  

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ajna_starApr-02-04 04:38 PM
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#2739, "RE: running without a tcu?"
In response to Reply # 5




          

well then someones gotta get on that autostick mod right quick... has anyone actually done it yet?


2005 Corolla XRS
2ZZ 6-speed

  

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