R32gtr attessa solenoid into r33gtr gr running rwd

[danny14]

Hi guys who has had experience with setting up a r32gtr attessa solenoid into a r33gtr to be able to run rwd safely?

 

 

[KiwiRS4T]

R32 and R33 attessas are quite different. if you want to run the R33 safely remove the front drive shaft.

[tricstar]

Been covered sooooo many times. Read the manual or search. There’s a completely safe method. By pulling the white or brown plug above your right leg whilst sitting the drivers and pressing the brake pedal a number of times. ( can’t remember exactly) it’s been done for years with no damage.

[KiwiRS4T]

21 hours ago, tricstar said:

Been covered sooooo many times. Read the manual or search. There’s a completely safe method. By pulling the white or brown plug above your right leg whilst sitting the drivers and pressing the brake pedal a number of times. ( can’t remember exactly) it’s been done for years with no damage.

Yep this is in the manual.

Locate the "air bleed" wire behind the drivers kick panel, it's a plug with a single wire either side (usually green socket, white plug).

 

In my S1 Stagea its a very small black plug taped to a loom with a single yellow wire with a green trace going to the plug and a single black wire going to the socket.

 

Disconnect it.

 

Start car. As key comes back to the ON position, within 10 seconds, depress brake pedal 5 times, 4WD light will start flashing to indicate you are in 2WD mode.

 

You need to do this every time you start the car.

 

To go back to 4WD mode, turn car off, reconnect plug and off you go.

 

And if you plan to do this a lot you can put a switch in somewhere.

 

 

But if you plan to do a day's drifting better to remove the front drive shaft.

[BK]

I have 32 and 33 gtr. Looking at it you could use a 32 setup on a 33 to make it only a power down attesa ecu situation to run 2wd, but you wouldn't want to do it. It would make the 33s Attesa system shit. 33 Attesa system is better not only from faster acting ecu, but because if the difference in the hydraulic side.

The 32 runs Attesa solenoid. Normal conditions has 0 psi. When the g sensors and tps signals tell the ATTESA ecu to apply 4wd pressure is applied anywhere from 0 - 250ish psi depending on how much 4wd is needed.

The 33 runs dual solenoids. One, referred to as the failsafe solenoid keeps around 30psi at the attesa actuator at all times, essentially preloading the front drive slightly. That's why 33s always have a small amount of front drive all the time, and you cant just kill power to attesa system to go into 2wd like on a 32. The second solenoid is to feed in the varying high pressure to the attesa actuator commanded by the attesa ecu to control the 4wd. Because of this preload, the system can get up to full pressure much faster, making for a faster reacting 4wd system.

swapping to a 32 setup would be going backwards. The method mentioned above is essentially depressurising the failsafe solenoid on a 33, so that there is no attesa actuator preload on the transfer case, meaning you can get 33 into rwd without dragging on your transfer clutch plates. That is the safe way to do it without hurting the transfer case.