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brizzi

By brizzi,
in Four Door Family & Wagoneers

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brizzi Collaborator

brizzi

Posted
Posted

Hi all doe's anyone know if a r33 auto computer will run in a stagea?

We were thinking since stageas are soo detuned you could gain by using a 33 auto computer.

Doe's anyone know if this would create any problems or could this quite possibly work?

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CruiseLiner Mentor

CruiseLiner

Posted
Posted
Hi all doe's anyone know if a r33 auto computer will run in a stagea?

We were thinking since stageas are soo detuned you could gain by using a 33 auto computer.

Doe's anyone know if this would create any problems or could this quite possibly work?

different plug from memory, but im sure someone on here will know for sure

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AlexCim Grand Master

AlexCim

Posted
Posted

Both the R34 and R33's have VVT on the intake cam. The difference is the R34 system is infinatly variable in adjustment, where the R33 system is on/off.

However, this doesnt seem to be an issue as Cyrus is running and R34 GTT powerFC in his R33 engined manual converted Stagea.

I dont know if the tiptronic/not argument has much basis either, as the box still works like an auto, essentially they are both the same, with the tiptronic feature being an add-on to the standard auto box....understand what I am trying to say.

Id be curious to see what would happen if someone tried it.

OH, on another note, there are a few sensor changes from R33 to R34, for example R34 RB25DET's have MAP sensors which tell the ecu how much boost the car is running, also a few of the pinouts on the R34 are different to the Stagea, namingly the injectors are on different pins (hence the car wont run plug out/plug in with an R34 ecu)

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Terminal Grand Master

Terminal

Posted
Posted

I was talking to Beastian last night, he said he plugged his R34 PowerFC into his car, and it worked first go with nothing changed. It didn't drive as his car is still auto, but the engine worked. I don't think the injectors are on different pins if this happened

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beastien Proficient

beastien

Posted
Posted

Three of the injectors are definately on different pins, but they are just mixed around with each other, this is why the engine still ran, the injectors would be firing at the wrong time, but the timing is so close, it still ran under no load.

If you drove it like this you would definately notice it.

Also I have found out through someone in the forced induction section, and confirmed it with the R34 service manual and Stagea S2 service manual, that the VCT is basically the same between the R33 and R34, it's ON/OFF. The only difference is the R34 has been designed so it comes on alot more smoothly.

There are a few sensor differences aswell, but from studying the service manuals, they won't make any difference to the running of the engine. I think they are mainly to do with the more intricate R&R mapping that R34's have.

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Tangles Grand Master

Tangles

Posted
Posted

So are you saying you can plug in a R34 GTT Powerfc into the S1 Stagea (auto or manual, it makes no difference if the auto has the MV shift kit), fire it up, and have it dyno tuned, and away you go?

Or is there more to it then just that ?

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beastien Proficient

beastien

Posted
Posted

Definately has to be a manual Brendan, Power FC has no facility or connections to control the auto box unfortunately.

I'll actually be starting my conversion this weekend, and the PFC will be going in afterwards.

I just wanted to plug it in and see what happened, Theres been a bit of talk about the R34 version not being compatible with the S1, and modifications being needed. I knew it would work because Ska's seems to work fine, and I thought I would be the next guinea pig, and work it out for myself. What I have found is very promising, and it's looking alot easier to acheive than first thought.

Once everything is finalised, I will gladly post my findings, and answer any questions.

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Tangles Grand Master

Tangles

Posted
Posted
Definately has to be a manual

Nup.

Power FC in auto R33 RB25det does work

with MV Automatics shift kit

........... trust me ! :P

would love to pick your brain once its all done brendan, all the best 'bro

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beastien Proficient

beastien

Posted
Posted
Nup.

Power FC in auto R33 RB25det does work

with MV Automatics shift kit

........... trust me ! :(

would love to pick your brain once its all done brendan, all the best 'bro

I'm almost certain, specially after looking at an R33 service manual, that they have a separate Auto trans ECU, unlike the stagea which is incorporated into the engine ECU. Thats the only way it could work.

Maybe it would be possible to put an auto ECU from an R33 into the stagea to control the transmission, and run the engine from a Power FC or such.

More than keen to share my findings mate :wave:

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  • 3 weeks later...
Mr_RS4 Rising Star

Mr_RS4

Posted
Posted
Nup.

Power FC in auto R33 RB25det does work

with MV Automatics shift kit

........... trust me ! :laugh:

would love to pick your brain once its all done brendan, all the best 'bro

I'm pretty sure that I remember reading in an issue of HPI a while back they did a feature on Auto's with MV Automatics. And as well as the shift kits and other internal mods they do for autos they also have a little black box they've made where it bascially takes the control away from the auto ecu and makes it manual. As in it won't shift itself anymore you need to use the auto shifter to change gears (like 1st, 2nd, D = 3rd etc). This would explain what Tangels was saying. If this were the case then it wouldn't matter about using the PFC as long as it can run the motor, you'd just have to get used to changing gears with the auto selector.

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