Hi,

I have a 2000 FD3s Rx7 Auto. I recently started some modding to it and I tried to put in a Power FC, but obviously it doesn't work as it has nothing to control the Auto transmission.

I found this: http://banzai-racing.com/store/FD_auto_ecu_adapter.html

But it is only suited for the older ECU's (93-95).

I unfortunately cant drive a manual as I am in a wheelchair so a Auto to Manual conversion is impossible.

If anyone knows a wiring harness to Piggyback the Power FC with the Stock ECU (to control the auto transmission) I would appreciate it.


Thanks

 

did you talk to chris at banzai racing he may be able to make you one?

 

I've never even seen a pinout for series 8 ECU or transmission controller. That's the biggest problem.

 

They have never seen a S8 unfortunantly!

 

Sorry I meant to say they dont have access to a S8 Auto FD to develop it

 

yeah you can thank the US government for their strict importation laws

 

For sure some Japanese garage has done this? Unfortunantly I cant read japanese! Apexi doesnt have a e-mail address to contact them about it either.

 

You're not out of luck on having fun with your automatic. Buy the PowerFC if that's what you're dead set on using.

See if you can buy the PCS TCM-2000. I think the 2000 FD3S still used the R4A-EL automatic. You should be able to buy the harness for that and get going from there.
http://www.powertraincontrolsolution...anscontrol.php

$ Exchange rate should be okay right now too
Hope this helped

 

thats sucks... chris made it so easy for us auto guys to run the pfc.. mine works great. the trans shifts like factory.

 

That is my only worry if I change the computer running the gearbox it might act strange or shift differently. I still want a smooth ride while being able to use the PFC

 

Realistically you are going to have to keep the factory computer and not mod the car too much. Install an exhaust system (with a cat), a boost gauge, and a wideband AFR gauge just to make sure it isn't leaning out. Then you can install an aftermarket boost controller if you want to.

Otherwise you can swap out the computer and put up with loss of transmission functionality.

 

Any ideas on how rough it could be between gears when cruising around with an aftermarket computer? I dont mind if its a bit of a jolt if your giving it alot of gas, but dont want it to be a dog to drive when taking it easy.

Obviously the best idea is to keep the stock ECU, ive already put a dump pipe and full exhaust system on there with a FMIC. Boost, oil press, temp guages already installed. I looked at a boost controller but im weary as you said of it leaning out and something going wrong.

Is it difficult to create a harness for these like the one from Banzai?

What does the computer need to run the auto transmission?

 

As I pointed out earlier, there are no available pinouts of the engine and transmission control units for series 7 and later, at least in English.

I've never looked at the Banzai harness for automatic cars, but just looking through the pinout in the series 6 manual it would include:

gear selector signals
engine speed
vehicle speed
a/c signal
5 volt reference voltage
hold switch
throttle position
water temperature
brake light switch
ATF temperature
battery voltage
ground


there are a couple signals that the automatic ECU commands to the actual transmission controller for lockup control and other functions. Clearly the PFC doesn't provide those but the transmission control unit must work ok without them. If you had the pinouts for the Series 8 control units you could modify the existing harness, which wouldn't be nearly as clean as a plug-and-play adapter but would get the job done. The big limitation is the lack of information as I pointed out.

If you really want to heavily modify your car and you don't want to put up with the loss of transmission functionality your best bet is to sell your series 8 and get a series 6. I'm sure they're much cheaper over there, although I bet most of them are trashed like early 90s Camaros you see around here.

 

Bringing thins back from the dead in case anyone needs some info. I have been running my auto series 8 with an adaptronic ecu for the past couple of years and it works great. The box shifts basically like normal, just on the odd rare occasion the HOLD light will flash and then you lose the ability to control the Hold function, but you just turn the ignition off and on and its gone. Also had a mate with a PFC in his auto series 8 and had the same positive results as me.

I do have a problem now though, I just installed a modified valve body to speed up the gear changes, which it has done, but it has also resulted in the gear shift points dropping down to 5500 rpm instead of 7000-7500. This obviously sucks.
And the trans place who modified the valve body told me it is solely the auto ecu which determines the shift point, and to get a scan tool and figure out whats going on, and then tune the ecu, which im pretty certain is not possible. So yeah kind of screwed at the moment, and don't really want to spend 2k just for an aftermarket auto ecu....

 

Hi mate, I'm looking to hookup a power fc to my 2000 fd, and your post is the only lead that this is possible. Any chance you could elaborate on how to wire them up?

 

It will just plug straight in, its plug and play