R32 GTR do-luck digital g sensor

[weikleenget]

Hi all, I’m in the middle of restoring my R32 GTR and have heard that the stock g sensor under the center console is prone to age and uses antiquated technology. Has anybody used the Do Luck digital g sensor with any success? Or any recommendations?

I’m also curious if this unit would affect the stock ambient pressure in the attesa pump, because I would like to wire in a switch to the AWD fuse to go into RWD only on the fly, and I understand this only works with the R32 system that has no ambient pressure. Anybody can confirm?

Thanks

[joshuaho96]

1 hour ago, weikleenget said:

Hi all, I’m in the middle of restoring my R32 GTR and have heard that the stock g sensor under the center console is prone to age and uses antiquated technology. Has anybody used the Do Luck digital g sensor with any success? Or any recommendations?

I’m also curious if this unit would affect the stock ambient pressure in the attesa pump, because I would like to wire in a switch to the AWD fuse to go into RWD only on the fly, and I understand this only works with the R32 system that has no ambient pressure. Anybody can confirm?

Thanks

The g-sensor of the R32 won't affect whether pulling the fuse disables the system. The R33 + R34 uses a failsafe solenoid to do what you're talking about.

[funkymonkey]

the switch in an R32 prevents power transfer to the front, most of the time it is in RWD mode. R33's and R34's use a second solenoid to maintain residual pressure in the pump so that the power transfer is faster, hence why you can't just kill it by pulling the fuse or wiring a switch in-line with the fuse.

the G sensor's PWM is not the issue, the transfer of power to the front is mostly affected by the speed of the ATTESA pump... hence why in subsequent models they upgraded the pump system.

my personal opinion is that upgrading the G Sensor is snake oil and a waste of money. once you turn off the solenoid you have to restart the car to make it active again... which is not something you do in an ordinary driving situation. You'd only flick the switch to do skids, some drifting or warming up tyres for drag or a 2WD dyno. In all those scenarios the speed at which you disable ATTESA is irrelevant.

There are cheaper ways to intercept the PWM duty cycle from the sensor so it's not a permanent off till restart, these days you can use an Arduino for IO, about 20 years ago we used $50 circuit boards from JayCar. It's definitely not as exxy as $500+ for a Do-Luck unit.

[joshuaho96]

15 hours ago, funkymonkey said:

the switch in an R32 prevents power transfer to the front, most of the time it is in RWD mode. R33's and R34's use a second solenoid to maintain residual pressure in the pump so that the power transfer is faster, hence why you can't just kill it by pulling the fuse or wiring a switch in-line with the fuse.

the G sensor's PWM is not the issue, the transfer of power to the front is mostly affected by the speed of the ATTESA pump... hence why in subsequent models they upgraded the pump system.

my personal opinion is that upgrading the G Sensor is snake oil and a waste of money. once you turn off the solenoid you have to restart the car to make it active again... which is not something you do in an ordinary driving situation. You'd only flick the switch to do skids, some drifting or warming up tyres for drag or a 2WD dyno. In all those scenarios the speed at which you disable ATTESA is irrelevant.

There are cheaper ways to intercept the PWM duty cycle from the sensor so it's not a permanent off till restart, these days you can use an Arduino for IO, about 20 years ago we used $50 circuit boards from JayCar. It's definitely not as exxy as $500+ for a Do-Luck unit.

The G-sensor is just a replacement for the old factory sensor. MEMS reacts faster and probably more accurately than the old sensor design. To my knowledge all it can do on top of that is fake the sensor response to make the ATTESA system think there is more or less friction coefficient on the road at any given moment to reduce or increase the AWD. People in my area have reported decent improvements to driveability in autocross so it's probably not a waste of money.

[kevboost7]

I dont know what the stock g-sensor is like because my car didnt come with one. The previous owner in japan already removed it. But i installed the doluck sensor and noticed the car handles noticeably better in AWD than in RWD.