Jump to content
SAU Community

ECU for an automatc

FatJap

By FatJap,
in Engines & Forced Induction

 Share

Recommended Posts

  • Replies 60
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

predator Grand Master

predator

Posted
Posted
I also have a aotomatic turbo R33 and was looking at buying a after market ecu like the apexi pfc and been shopping around 4 a good price and doing sum research about them 4 my car and i was speaking to a company on brisbane southside called fist performance and audio and he said u can use the pfc on the auto and it will work but he has to order it from japan if wanted it .

I think he was just trying to sell you a PowerFC - unless of course there is a specifcally reprogrammed "auto" version around?

Sydneykid Grand Master

Sydneykid

Posted
Posted

I have seen Power FC for Toyota autos, but never Nissan autos. I have no doubt the manual Power FC will run the engine, I have driven an auto R33 GTST with a Power FC. The engine runs perfectly, exactly the same as a manual R33 GTST. But the gearchange quality was crap in my opinion. It flared on up changes, swapped between gears under even load and the kick down was eaither lethargic (sometimes) or viscious (most times). All of these symptons are logical in light of the manual Power FC not having the programming logic for ignition retard and cut during gearchanges.

I should point out that the owner was completely happy and was quite willing to sacrifice a "small amount" (his words, not mine) of gearbox niceness for the power he got from the Power FC and its tuning. So until the gearbox eventually fails from this excess loading, it comes down to personal opinion. I don't know that I would want to try and claim warranty on "personal opinion".

Since I want to keep the standard gearbox niceness and life, retaining the standard ECU auto programming logic is a must. Unitil I find a guaranteed replacement ECU that is. :D

  • 6 months later...
David Kemps Enthusiast

David Kemps

Posted
Posted

its actually on a s13 with sr20det but think it would be similar.

the problem is the fuel pump i think, its not priming when you turn the key on, and not running at all.

even when you directly wire it into 12volts and it runs still is not starting, my friend seems to think the power fc has to "see" the fuel pump.

anyone know the water temp sensor voltage when cold?

Sydneykid Grand Master

Sydneykid

Posted
Posted
its actually on a s13 with sr20det but think it would be similar.

the problem is the fuel pump i think, its not priming when you turn the key on, and not running at all.

even when you directly wire it into 12volts and it runs still is not starting, my friend seems to think the power fc has to "see" the fuel pump.

anyone know the water temp sensor voltage when cold?

What have you done about the Park/Neutral switch from the auto? If you don't switch it on or bridge it out, the car will not start. ;)

David Kemps Enthusiast

David Kemps

Posted
Posted

ok, a little background info to help you.

the car is a 180sx s13 1991.

it was manual, converted to automatic - working fine with stock ecu for about 1.5 years.

when you plug in the power fc, the car will not start and the fuel pump won't prime or run.

we believe it is because the power fc thinks the water temperature sensor is faulty.

in the menu it shows that the Water temperature sensor has a voltage or 4.88volts when cold.

so i plug in the standard ecu and my consult board, the water temperature sensor is working fine, showing the correct temperature.

ok so now the car is heated up with the water temperature around 60degrees.

we plug back in the power fc and sure enough still 4.88 volts for the water temperature sensor. obvously the power is not even reading it properly.

the power fc shows this voltage as an incorrect voltage, meaning it thinks the sensor is broken, it definately is not.

my guesses:

-power fc is faulty

-power fc is wrong model (there are 3 or 4 models for the s13 alone)

-standard ecu was the wrong one for the model and sensor have been changed to match.

(the sensors were changed in later models)

NOPE looked on fast and websites and it is the right ecu for the car.

also checked the model of the power fc out and it is the correct model.

we are stumped.

also when we plugged in the power fc the first time, even when we pushed the throttle the TPS voltage would not change, the second time it was working fine, which makes me lean towards faulty power fc.

this power fc has been bought new ordered from apexi japan.

predator Grand Master

predator

Posted
Posted

More than likely you have either not plugged it in fully...or you need to run thicker gauge wiring to the battery for the 12v source.. anyhow, i'm just regurgitating..

It's all here in the very excellent PowerFC FAQ by paulr33 :)

http://members.dodo.com.au/paul/skylinesau...erfc-faq.htm#18

Sydneykid Grand Master

Sydneykid

Posted
Posted
I just wonder could PFC fits R34 GTT auto? The reason i'm asking is because even i shifting it manually,i felt the gearbox is not shifting/response fast enough in the high RMP.  

Is any GTT auto mates has the same feeling as mine?  

cheers

steven

Hi Steven, no it won't work, not even close. Nissan automatic ECU's have shift logic (eg; they cut ignition on gearchanges to smooth them out and help the gearbox to last longer). This extensive amount of logic is not programmed into Power FC's, I guess Apexi figured they would have to charge too much or they don't want to get into auto gearbox programming.:P

David Kemps Enthusiast

David Kemps

Posted
Posted
More than likely you have either not plugged it in fully...or you need to run thicker gauge wiring to the battery for the 12v source.. anyhow, i'm just regurgitating..  

It's all here in the very excellent PowerFC FAQ by paulr33 :D

http://members.dodo.com.au/paul/skylinesau...erfc-faq.htm#18

10 points to predator, yep my friend didn't use a socket set each time and it wasn't all the way in on the plugs.

sorry for wasting your time! ;)

Silver'sR33 Rising Star

Silver'sR33

Posted
Posted

Was looking around for an ECU for the auto too. Like Sydneykid I'm not keen on sacrificing long-term durability though. At this stage I'm looking at getting either an e-manage or SAFC, maybe SAFC because it looks easier to tune. Obviously it won't give the performance kick of a full chip replacement but I guess that's just life hey :cheers:

666DAN Grand Master

666DAN

Posted
Posted

As far as quick shifting goes, there was a member on here called Dragon, who bought an upgrade chip which shortened the lag time between shits, not sure who made it though?

Most of the guys with the autos can run the e-manage with no problems, my one has been serving me fine.

4door_Sleeper Veteran

4door_Sleeper

Posted
Posted
Nissan automatic ECU's have shift logic (eg; they cut ignition on gearchanges to smooth them out and help the gearbox to last longer).  This extensive amount of logic is not programmed into Power FC's, I guess Apexi figured they would have to charge too much or they don't want to get into auto gearbox programming.:cheers:

Just a thought -

the big killer of Autos is heat, and the slower the shift the more heat they produce. (but the smoother the ride for the general public)

The shift kits that are being sold through the group buys section seem to be a hit, and they too give quick shifts, and reportly wont harm the longevity of the auto.

SK, are you comming down to Malalar soon? the offer is still there if you want to try out my auto R33 with the PFC.

nedb Proficient

nedb

Posted
Posted

SK - where is the Shift Logic kept on Nissan Automatics? Is it on the Main ECU or the second Auto ECU?

I wonder if you were to swap the Main ECU's from an Manual into an Auto from a same model car if it would work?

If the Shift Logic is kept on the Auto ECU i see no reason why it wouldn't work.

If that is the case then the guys doing remaps dont have to worry if the ECU they're working on is from an Auto or a Manual car. Right?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      What brakes on R34 GTT(Europe)

      By GTSBoy · Posted

      I would just put EBC back on the "I would not use their stuff" pile and move on.
    • Duncan
      What brakes on R34 GTT(Europe)

      By Duncan · Posted

      Can I suggest you try EBC directly again and link them to as many competitor catalogues as you can to show their listing is incorrect, eg https://dba.com.au/product/front-4000-series-hd-brake-rotor-dba42304/ If you have access to an R33 GTST VIN and your VIN, you could also use a Nissan Parts lookup like Amayama to show them the part number is different between 33 GTST and 34 GTT which may get their attention
    • Kapr
      What brakes on R34 GTT(Europe)

      By Kapr · Posted

      So i got reply from EBC and they just this site where you can clearly see those 296mm fronts on R34 GTT. I send them photos and "quotes" that 296mm are not for 34 GTT and they are too small. But it will be very hard to return them cuz nobody here knows 100% and they just copy those EBC catalogue :-D https://ebcbrakesdirect.com/automotive/nissan/skyline-r34
    • 04-LOOX
      R34 GTR Vspec Garage Sale - All must go!

      By 04-LOOX · Posted

      Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
×
×
  • Create New...