ETS-Pro Center Diff Torque Split Controller for R32 R33 R34 Skyline GT-R - GT-R Register - Nissan Skyline and GTR Owners Club forum

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Old 30th April 2012, 09:26 PM   #1 (permalink)
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Exclamation ETS-Pro Center Diff Torque Split Controller for R32 R33 R34 Skyline GT-R

Hello Everyone!

We finally got the highly anticipated ETS-Pro Center Diff Torque Split Controller for R32 R33 R34 Skyline GT-R



The ETS-Pro is engineered specifically for use with the R32, R33 and R34 Skyline GT-R. Designed to give you complete control over Nissan's multiplate transfer case. The ETS-Pro makes it easy to adjust active torque split percentages and also allows you switch from 4wd -> 2wd on the fly, and all points in between.

FAQ Located HERE
Installation details located HERE



-The ATESSA-ETS primary solenoid is remarkably similar to the Subaru STI solenoid in terms of control and response/output. However, the GT-R has a lot more amperage draw than the Subaru and if we keep a low base pressure of ~20+psi, the response is instantaneous and can hit 250psi in less than a second...maybe tenths of a second even. This is much quicker than anything else that has been tested previously. This is 21 year old R32 GTR atessa pump, from a salvage yard, 100k KM on it. Response times are noticeably faster than the factory system. If the solenoid takes the pressure down too low there is a large amount of lag present in the system, which is what the stock ecu allows for and why everyone complains about "delay" in the stock system. We believe most aftermarket torque split controllers and other tricks to the stock system served to "trick" the factory computer and make it retain pressure in the system, reducing lag.

-The new ETS-Pro firmware was designed to hold a bit of pressure at the bottom end to reduce system lag, and tuning the max top end to produce a hair more than full lockup of the clutchpack. If allowed, the pump can produce up to ~350psi+ instantly which is interesting (scary) on the least! I'm not sure what you guys have been able to do with the modified stock system but I was surprised that a hydraulic system go from nothing to basically 240psi in less than a few tenths of a second with some clever programming.



-After charting the curve of duty cycle vs pressure, it is very manageable and we can get an amazing resolution from the ETS-Pro maps (It can control the pressure to approx. 0.83 psi increments.)

-both R32 and R33 GTR ATESSA pumps were tested and we found virtually zero difference in performance between the pumps or solenoid. The computer and firmware/algorithms is the real difference.

-ETS-Pro can be in Manual mode which controls pressure directly off the knob setting, OR auto mode which uses the tps and g-sensors working off the algorithm and the knob for "gain". The Auto mode is able to respond immediately with very little lag and very precise pressure control....so far we're excited how well it is working as it is clearly exceeding the performance of the STI pump/solenoid that is typically modified.

-USB tuning will work but most setups can use 'Auto mode' and work entirely off of the "gain knob" (this is what we are doing at Full-Race)



some questions we've received from other forum members:

1) Q: where can i mount the unit? i noticed your instructions do not reference mounting dead center in the chassis (you suggest up near the firewall) however nissan's manual does - for example can i mount the unit in the left corner of the trunk? not that i want to, but just asking. I do understand the arrows and wires must face forwards of course

A: The control box itself could be mounted pretty much anywhere, we recommend that the g-sensor module get mounted in the physical center of the car for turning calculations. Same location as the stock unit is ideal right above the transmission (mine will be installed inside the car to protect it). The cable from the box to the g-sensor is about a meter. 2 part epoxy is required for the G-sensor, DO NOT USE TAPE

2) Q: how do you wire the pump? anything in particular to note?

A: The pump will get wired to ignition switched power and of course an included relay to control the pump. Wiring Details will be updated by May 1st


To place an order Please e-mail Jon@Full-Race.com with your full name and address, and screen name on gtr.co.uk - He will then get you an estimate with the total cost with shipping.

All the units will be shipping out via FedEx


If you have any questions let us know. This thread also holds a lot of info.

Upgraded/Programable/Faster ATTESSA ECU!!

Thank you
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Old 30th April 2012, 09:31 PM   #2 (permalink)
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Geoff, Im interested, Always liked the DCCDPro so would be fun to try this out.

Ill be flying next week and would like to place an order with you im gonna PM you my deets

Willing to take 2 off your hands at that price. Check your PM Inbox.
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Old 30th April 2012, 09:49 PM   #3 (permalink)
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E-mail sent.

Thank you
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Old 1st May 2012, 02:44 AM   #4 (permalink)
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very nice box of tricks. email sent to Jon
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Old 1st May 2012, 05:20 AM   #5 (permalink)
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Awesome, will be in contact very soon... thanks Geoff!
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Old 1st May 2012, 07:40 AM   #6 (permalink)
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Question for you Geoff, does the G-Sensor work correctly with an R34GTR V-Spec Nismo MFD for g-graph and also the front wheel torque display?
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Old 1st May 2012, 05:18 PM   #7 (permalink)
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Sorry for being thick but this utilises the standard G-sensor does it not??

TT
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Old 1st May 2012, 05:30 PM   #8 (permalink)
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I think it replaces the standard g-sensor, there was a post on the main thread about removing the standard one
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Old 1st May 2012, 09:08 PM   #9 (permalink)
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so

....in Manual mode is like a DCCD equiped Impreza?
....in Auto its a much quicker RWD to 50/50 based on the G Sensor inputs and TPS to 'up' the gain when powering out of a corner?
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Old 1st May 2012, 09:15 PM   #10 (permalink)
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Plus, you can re-map it to act how you like

Also in Auto mode (if its like his Subie based units) to can tune the amount of lock you like via the gain knob, this way it will only go so far with locking the center diff.
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Old 2nd May 2012, 09:18 AM   #11 (permalink)
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Perhaps I have missed that but does this kit also replace the ATTESSA ECU???

Cheers,

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Old 2nd May 2012, 12:36 PM   #12 (permalink)
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Put me down for one
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Old 2nd May 2012, 12:52 PM   #13 (permalink)
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Old 2nd May 2012, 01:00 PM   #14 (permalink)
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Will/How does it effect the active rear differential found on v-spec models?
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Old 2nd May 2012, 01:09 PM   #15 (permalink)
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I will have one I it replaces ecu and g sensor email sending now
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Old 2nd May 2012, 01:26 PM   #16 (permalink)
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Is there going to be specific installation instructions for the skylines also will this work with the standard torque gauge in the cluster
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Old 2nd May 2012, 02:03 PM   #17 (permalink)
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Quote:
Originally Posted by gtr-loz View Post
Is there going to be specific installation instructions for the skylines also will this work with the standard torque gauge in the cluster
Good point!

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Old 2nd May 2012, 08:29 PM   #18 (permalink)
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Yh, instructions seem to be for Scooby connections
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Old 3rd May 2012, 12:12 PM   #19 (permalink)
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is there going to be a group buy list .....

or is it just a pm to Geoff ???

pm sent (just to be sure)

Nigel
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Old 3rd May 2012, 12:34 PM   #20 (permalink)
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Quote:
Originally Posted by Satansbodyguard View Post
is there going to be a group buy list .....

or is it just a pm to Geoff ???

pm sent (just to be sure)

Nigel
i emailed jon as instructed on the first post(see below)
mines on it's way!


To place an order Please e-mail Jon@Full-Race.com with your full name and address, and screen name on gtr.co.uk - He will then get you an estimate with the total cost with shipping.

All the units will be shipping out via FedEx
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