Jump to content
SAU Community

Recommended Posts

Hi,

I'm currently in the market for an ECU for my R33 GTS25t. My only problem is that I have an automatic. I was originally in the market for a PowerFC but have been told they do not support automatics.

What would you recommend?

Current Mods:

Hi Flowed turbo

Intercooler

Full exhaust

Filter

Bleed Valve

Link to comment
https://www.sau.com.au/forums/topic/51247-ecu-for-an-automatc/
Share on other sites

  • Replies 60
  • Created
  • Last Reply

Top Posters In This Topic

A couple of the guys have used Wolfs to do it, do a search and you can probably find some useful info.

I have read all the posts (several times) and I haven't seen anything that explains how the Wolf handles the igntion cut/retard on gearchanges. The standard auto ECU has this feature to make the gearchanges smooth and lessen the torque shock on the transmission. I have an auto Stagea and would really like to change the ECU but not at the expense of shift quality and gearbox durability. So can you please enlighten me? :rofl:

Buddy club do make a ECU for auto cars tho

http://www.takakaira.com/asp/table.asp?id=...QRrNoOojlKmipLk

Nope checked that out a while ago, it moves the gearchange points around. It doesn't do a thing about ignition timing and cut on the gearchanges. :rofl:

ok... this is a silly question.. but in an auto don't you roughtly know when the ECU is going to change gears on load? so can't you tune the ECU to do the correct ignition timing drop or reduction in power at those rev points? If not, why not?

actually: edit when i think about it.. whilst not on load or everyday driving, then you'd have a bunch of flat spots - not ideal. Is this correct?

i guess you could get the stock ecu chipped (theres a guy in the for sale section) and get the af optimized, boost cut and fuel cut removed, rev limit set higher and that could be the best you'd get for $ and effort

just an idea

Ive bin using Wolfs on S1+2 Auto GTSs for 2 years and we are not having problems.

Hi Steve, if you can convince me that the shift quality and gearbox durability will not be affected at all in the Stagea , I will buy a Wolf from you tomorrow. I have been holding off on the usual SAFC option (for fuel tuning) looking for an answer for ignition timing tuning.

I have tried cars with all manner of piggy back ecu's, Power FC's, Emanage, Exede etc. I have yet to find one that even comes close to the standard shift quality. Since the Stagea travels around the country with 1.7 tonnes hanging off the back, I can't afford gearbox durability issues.

The Stagea has/will have the usual RB25DET mods for around 200 awkw (high flow, FMIC, exhaust, split dump, panel filter). If you have a set of Wolf maps that will do the job, I will buy them off you as well.

PM me if you want to proceed. :D

Gary,

Have you considered getting a daughterboard put into the stagea?

Might be your best bet if you think the factory shift quality is already the best.

http://page6.auctions.yahoo.co.jp/jp/auction/f25040797

Ed

Hi Ed, woooohooo that's a bit beyond my expertise. Whilst I have built a few audio amps and other stuff, I stay away from sticking a hot soldering iron inside an ECU. Maybe some of the electronics guru's on here might be more up to speed.

:D

Hi Ed, woooohooo that's a bit beyond my expertise.  Whilst I have built a few audio amps and other stuff, I stay away from sticking a hot soldering iron inside an ECU.  Maybe some of the electronics guru's on here might be more up to speed.

:D

It just reads maps from the daughterboard instead of the maps on the stock ECU.

Rev limit, speed cut etc can all be removed/changed.

I believe this is what Abo Bob has got.

Silvia boys have been doing this for ages.

Only drawback is you need an eprom emulator to tune real time and use map tracing and also a writer.

I think the both will set you back around $500?

There's plenty of free software out there written for daughterboards.

Here is one

http://www.925style.com/editor_direct.html

The basic theory behind retuning the factory ecu is to alter the fuel and ignition maps amongst other things like the rev limiter and speed limiter. These maps are the only thing altered, so the excellent factory controlling of idling and air conditioning remains intact. The main advantage of using the factory computer is the low cost, as very little hardware is required.

Taken from

http://www.sr20tuning.com/theoryandpartsrequired.html

:)

Till ive done my first stagea auto I cant be sure how they will go but the 2WD cars have been fine.

Thanks Steve, I might just use an SAFC for the moment and then when you have done a Stagea I will upgrade to the Wolf. SAFC's are easy to sell. :D

Sweet that's what I want....a daughter board!!!! Do the have one that's plug and play...just looks like it's missing a few components in that picture...if it's just a matter of soldering it in, I'm not phased by electronics.

There are a few that have been done in WA (34's) from Bikirom but Bikirom has stopped it as they are designing a new PCB that will have USB interface instead of RS232.

Not sure if you still need a emulator or eprom writer with the new design.

Last I heard was they had finalised the PCB and were waiting for a few test boards for actual testing.

Can anyone confirm that a powerfc wont work on a auto r33 skyline. I was about to buy one. Buddy club do make a ECU for auto cars tho

http://www.takakaira.com/asp/table.asp?id=...QRrNoOojlKmipLk

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 .

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



  • Similar Content

  • Latest Posts

    • Have a look at that (shitty) pic I posted. You can see AN -4 braided line coming to a -4 to 1/8 BSPT adapter, into a 1/8 BSPT T piece. The Haltech pressure sender is screwed into the long arm of the sender and factory sender (pre your pic) into the T side. You can also see the cable tie holding the whole contraption in place. Is it better than mounting the sender direct to your engine fitting......yes because it removes that vibration as the engine revs out 50 times every lap and that factory sender is pretty big. Is it necessary for you......well I've got no idea, I just don't like something important failing twice so over-engineer it to the moon!
    • Yup. You can get creative and make a sort of "bracket" with cable ties. Put 2 around the sender with a third passing underneath them strapped down against the sender. Then that third one is able to be passed through some hole at right angles to the orientation of the sender. Or some variation on the theme. Yes.... ummm, with caveats? I mean, the sender is BSP and you would likely have AN stuff on the hose, so yes, there would be the adapter you mention. But the block end will either be 1/8 NPT if that thread is still OK in there, or you can drill and tap it out to 1/4 BSP or NPT and use appropriate adapter there. As it stands, your mention of 1/8 BSPT male seems... wrong for the 1/8 NPT female it has to go into. The hose will be better, because even with the bush, the mass of the sender will be "hanging" off a hard threaded connection and will add some stress/strain to that. It might fail in the future. The hose eliminates almost all such risk - but adds in several more threaded connections to leak from! It really should be tapered, but it looks very long in that photo with no taper visible. If you have it in hand you should be able to see if it tapered or not. There technically is no possibility of a mechanical seal with a parallel male in a parallel female, so it is hard to believe that it is parallel male, but weirder things have happened. Maybe it's meant to seat on some surface when screwed in on the original installation? Anyway, at that thread size, parallel in parallel, with tape and goop, will seal just fine.
    • How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
×
×
  • Create New...