Controlling Electronic trans?

[Nightingale]

Its a crapshot idea, but would it be possible to piggyback a newer pcm from a car equipped with an electronic transmission so that it just controls the transmission shifts. I am not trying to be cheap, but since I am blowing most of my cash on the motor drivetrain is being overlooked. I would like to use the 4t65e-hd(would really like to use 4t80e but don't think it would bolt to the engine). I know there are TCMs out there but the price is just a little out of my budget. I really don't wanna use a 5spd manual either (not big on driving stick everyday). Sry if the post is a waste of time, but I had to get that idea out of my head weither it gets flammed away or not lol.

*EDIT* Just to clearify I want/need a stronger transmission to handle power plans in progress.

[TurboGTU]

I think Megasqurt was going to come out with such units. I was also thining of using BASIC STAMP...or some kind of gizmo like that.

[TurboGt]

The way I understood how the "new" megashift is going to work you will have to have the car running on megasquirt-II, this will be the brains and tell megashift how to opperate. Running MS II is a plus in itself because you get full control over you engine.

http://www.megasquirt.info/ms2/index.htm

Then you will need to buy a GPIO board. This is an expandable board that talks to your megaquirt and controls the trans, or just about anythign else you want. The GPIO board is not quite done being developed but shold be soon.

http://www.megasquirt.info/gpio/

Also with the GPIO board you will be able to run sequential injection and coil on plug, and a few other cool things.

I am installing MS II on my engine in my Fiero and will be posting a "how to" when it is in and running good. Hopefull will be in and running this weekend.

[Nightingale]

Ya I heard about the GPIO expansion, but from my understanding there is no telling how long it will take before it is ready. Just didn't sound reassuring as to when we will see this product. I'd like to have a solution by the summer when my engine gets finished, and is ready to be installed so it all gets done at one time.

[curtis73]

I'm no expert, but the trans control part of the box relies on sensors like MAP, TPS, VSS etc to work properly. Even if you hooked up those parts of the computer, often times without everything hooked up and operating the computer goes into limp mode. You would probably have to hook up absolutely everything including EGR vacuum solenoids, EVAP canister purges, O2 sensors... basically everything to prevent the ECM from tripping a code. At that point, you might as well retrofit the entire EFI system while you're at it.

[SHOoff]

MegaShift is an add-in daughter card for MegaSquirt that gives the user programmable control of a 4L60E transmission. Please note that it requires a dedicated MegaSquirt for transmission control - the MegaSquirt cannot also be used for fuel or ignition control.

Too bad it isnt a piggyback controller to go with the megasquirt.

[TurboGt]

I dont know how soon they are looking at but here is a thread on some guy wanting to run a 4l60e trans. They also talk about the "state of the union" for megasquirt and there are links for that in this thread also.

http://www.msefi.com/viewtopic.php?t=15222