Dumb Transmission Questions From A Newbie

[Kinkstaah]

  666DAN said:

Harsh..more like *no* gearchanges When you take out the ECU, you remove the control unit for the transmission, that's why it stays in 3rd. If you had a 25GT, it would have run just fine though, bloody Nissan.

  666DAN said:

Yep, it's only the GTt that has the intergrated TCM.ECM the N/A has the TCM seperated, so when you take out the ECU it still has gearshift capability.

I own a R34 GT (4dr, NA+T.. sort of) that has had its fair share of drama.

My ultimate fix for aforementioned drama would be to:

1) Engine swap with RB26DETT

2) Reinforce Auto box with MV Auto Shift kit

3) Use stock GTR ECU.

Given the above quotes, it should be possible. But given how expensive it would be to attempt, is any other information about this available, all over the internet all I've been able to find is DAN666's posts on the subject Is there any Nissan Documentation available on how this works in the NA vs the Turbo? Would really love it if it exists. Yes, I am a complete car newbie. Sorry if this is so bleedingly obvious noone documented it

I do also have a follow up question. (Whilst saving up for option A, above)

In my quest to get my car working, legal, and un-f**ked up (drivable), a fair bit of modification was/is/still is required, swapping loom, plenum, throttlebody etc. I also have an ECU.

This ECU is supposedly from a R34 A/T ECU. I presume this can only have come from a R34 GTT? If the shifting is handled outside of the ECU for the NA models, and you add an ECU that apparently has the shift logic in it.. what happens? Do I need to source a R34 GTT Manual ECU for my Automatic car, in this instance?

[Sarumatix]

Herm not the kind of project to undertake lightly. Would suggest it is probably more sensible to get the car you have running well before attempting something like that. I have been down the path before and generally what happens is just never actually get to enjoy the car because you spend the whole time fixing problems that really never needed fixing in the first place .

It would make far more sense to go for a 25/30 auto in any case.

[Kinkstaah]

Yea, getting the thing running nice and smooth is priority one.. this is really me wondering whether I can dream about it in the future. I suppose given the time it'll take for dreaming (saving money) it wouldnt be too hard to simply try a manual ECU and find out what happens. But I'd love more info on it as opposed to simply resorting to trial and error.

Especially as "getting the car running smoothly" would be on a stock ECU ideally, still not sure what happens in regards to AT ECU in a car that apparently has shift ability without one, sounds like it would cause complications, hence the query