Speed delimit options for JDM R35's - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Benji Linney GTC · 27th March 2008, 02:40 PM

I know a few people have JDM cars on route (except davew as he's not as hardcore as he used to be), so some info for you..

HKS Technical Factory have released the first standalone 180km/h speed limit defeat for the R35 GT-R. Other tuners like Mine’s and Power House Amuse have had products to remove the speed limiter based around ECU modifications but this is the first standalone product to do it to my knowledge. The VAC connects to your ECU harness and offers and on/off switch for some reason.

Expected to be priced at 96,000 JPY / £480

Garage Saurus and Autoselect have already received their VAC and are playing around with it on their own GT-R. Expect an update once their done with testing.

The other good news is that a cleaver UK electronics company has developed a similar product, which came out last week and is now on my R35. It's also alot cheaper at only £179 + vat etc.. with mph convert options is another £179.

The delimiter will remove the 180 KMH / 112 MPH factory programmed road speed limit which is standard to all Japanese imported Nissan R35 GT-R models.

For vehicles which also require a speedometer conversion from KMH to MPH, there is an additional output wire which can be connected to the speedometer speed signal input wire.

Overview And Installation

The Engine Control Unit on the Japanese home market Nissan R35 is pre programmed with a road speed limit of approximately 112 MPH, although with most converted speedometers, this will appear to take effect when the speedometer is reading around 120MPH. At this speed, engine performance is restricted to inhibit further acceleration.

Speed information is supplied to the ECU via the vehicles CAN (Controller Area Network) system, which can be found at the ECU as a twisted pair of wires. The CAN system carries a vast amount of vehicle data between controllers, some of which is used to enforce the road speed limit.

The delimiter works by analysing the vehicle data stream and re-writing the appropriate information to the ECU so as to defeat the factory limit function. This simply allows the vehicle to achieve the maximum designed road speed without restriction, the delimiter does not enhance normal engine performance in any way.

The delimiter is installed directly to the wiring at the ECU, behind the dash area on the passenger side of the vehicle. The delimiter wiring loom has pre-bulleted CAN wire connections fitted and is supplied with bullet connectors for installation to the cut ends of the vehicle CAN Bus wiring. The only other connections required are to a 12v+ power supply and to a good ground point.

The delimiter features CAN activity detection and will automatically switch off when vehicle CAN activity has ceased.

Full installation instructions are supplied with the unit, average installation time is approximately 40 minutes for delimiting and another hour for speedometer conversion if this is required. It is advisable to use a set of high quality, ratchet type crimpers to install the bullet connectors to the vehicle CAN wires and soldered connections for the power and speedometer wiring.

Wiring Details

White / Blue - CAN HI & CAN LO (LOOM)
White / Green - CAN HI & CAN LO (ECU)
Red - 12V+ Supply
Black - 0V Ground
Green - MPH Speedometer signal

TSUCHIYA-KUN · 27th March 2008, 03:34 PM

good info for futures R35 owners.Thx for share it

borat52 · 27th March 2008, 03:41 PM

Excellent post Ben. Many thanks for sharing the info with the forum.

doggiehowser · 27th March 2008, 04:57 PM

Q: does the HKS need splicing to join the ECU harness?

Spooled1.8 · 27th March 2008, 06:46 PM

That is definately ALOT easier on the wallet than HKS' solution, thanks for sharing

Armed English · 27th March 2008, 07:09 PM

I'm impressed! Did the GTR beat the 911 Turbo, M3 and R8 around Rockingham in the Car Magazine feature with it's speed limiter in place

Jspeed · 27th March 2008, 08:54 PM

Can u kindly tell me where I can order the UK product? I need one now!

davew · 27th March 2008, 09:36 PM

hey Ben, thats fighting talk up north!!!

tokyogtr · 28th March 2008, 01:43 AM

this is great. i'll be ordering one of these.

one question though is does this product stop the over speed warning light from coming on? once it comes on it will stay on until the car is restarted.

Benji Linney GTC · 28th March 2008, 02:27 PM

Quote:

Originally Posted by Armed English

I'm impressed! Did the GTR beat the 911 Turbo, M3 and R8 around Rockingham in the Car Magazine feature with it's speed limiter in place

it sure did, the day after coming out the container. But the Rockingham circuit was such that top speed wasn't an issue. Would like to do some timed runs of Silverstone etc..

tokyo- i havn't noticed it or any error messages

doggie- tbc but i doubt it

Jspeed- u have pm

davew- what can i say i though you were jdm ! once you were my hero with one of the first OS GTR that was in same league as say the Super Lemon

tokyogtr · 10th April 2008, 04:04 AM

so how does one go about ordering either of these? would like one of the asap.

msia · 14th May 2008, 02:31 PM

Ben, just got my R35... HKS VAC far too expensive. Please PM me regarding where I can get the UK-based delimiter please! Many thanks

GT-RRR · 15th May 2008, 01:46 AM

[quote=Benji Linney GTC;866943]I know a few people have JDM cars on route (except davew as he's not as hardcore as he used to be), so some info for you..

This is absoultely fantastic.....Thank you!!! Now all i need is an english owner's manual!!

Once again, THANK YOU!!

First · 15th May 2008, 02:16 AM

So for delimit purpose would all of you have chosen this over Mines ECU?

Mines add 0.1 bar boost. Isn't that a much better option?

TokyoGTR, I suppose you wanted this because the Mines ECU wasn't out then?

tokyogtr · 15th May 2008, 02:18 AM

Quote:

Originally Posted by First

So for delimit purpose would all of you have chosen this over Mines ECU?

Mines add 0.1 bar boost. Isn't that a much better option?

TokyoGTR, I suppose you wanted this because the Mines ECU wasn't out then?

not really. i just didn't realize the mine's would offer other performance enhancements. if i'm going to void the warranty, might as well get some tweaks along the way. the .1 boost, better torque curve plus speed delimit were all a bonus. also, it's just come out that the hks system switches off the satnav while it's on. not sure what the other product does. being in japan i actually use the satnav.

27th March 2008, 02:40 PM	#1 (permalink)
Benji Linney GTC GTR Register Member Join Date: May 2003 Location: Hertfordshire Posts: 988	Speed delimit options for JDM R35's I know a few people have JDM cars on route (except davew as he's not as hardcore as he used to be), so some info for you.. HKS Technical Factory have released the first standalone 180km/h speed limit defeat for the R35 GT-R. Other tuners like Mine’s and Power House Amuse have had products to remove the speed limiter based around ECU modifications but this is the first standalone product to do it to my knowledge. The VAC connects to your ECU harness and offers and on/off switch for some reason. Expected to be priced at 96,000 JPY / £480 Garage Saurus and Autoselect have already received their VAC and are playing around with it on their own GT-R. Expect an update once their done with testing. The other good news is that a cleaver UK electronics company has developed a similar product, which came out last week and is now on my R35. It's also alot cheaper at only £179 + vat etc.. with mph convert options is another £179. The delimiter will remove the 180 KMH / 112 MPH factory programmed road speed limit which is standard to all Japanese imported Nissan R35 GT-R models. For vehicles which also require a speedometer conversion from KMH to MPH, there is an additional output wire which can be connected to the speedometer speed signal input wire. Overview And Installation The Engine Control Unit on the Japanese home market Nissan R35 is pre programmed with a road speed limit of approximately 112 MPH, although with most converted speedometers, this will appear to take effect when the speedometer is reading around 120MPH. At this speed, engine performance is restricted to inhibit further acceleration. Speed information is supplied to the ECU via the vehicles CAN (Controller Area Network) system, which can be found at the ECU as a twisted pair of wires. The CAN system carries a vast amount of vehicle data between controllers, some of which is used to enforce the road speed limit. The delimiter works by analysing the vehicle data stream and re-writing the appropriate information to the ECU so as to defeat the factory limit function. This simply allows the vehicle to achieve the maximum designed road speed without restriction, the delimiter does not enhance normal engine performance in any way. The delimiter is installed directly to the wiring at the ECU, behind the dash area on the passenger side of the vehicle. The delimiter wiring loom has pre-bulleted CAN wire connections fitted and is supplied with bullet connectors for installation to the cut ends of the vehicle CAN Bus wiring. The only other connections required are to a 12v+ power supply and to a good ground point. The delimiter features CAN activity detection and will automatically switch off when vehicle CAN activity has ceased. Full installation instructions are supplied with the unit, average installation time is approximately 40 minutes for delimiting and another hour for speedometer conversion if this is required. It is advisable to use a set of high quality, ratchet type crimpers to install the bullet connectors to the vehicle CAN wires and soldered connections for the power and speedometer wiring. Wiring Details White / Blue - CAN HI & CAN LO (LOOM) White / Green - CAN HI & CAN LO (ECU) Red - 12V+ Supply Black - 0V Ground Green - MPH Speedometer signal __________________ GTC JAPANESE PERFORMANCE TUNING PARTS Tel: +44 1438 833367 Mob: +44 7970646620 SUPPLIERS OF THE BEST JAPAN HAS TO OFFER GTR 23 New Nissan R35 GT-R SUPER STORE - ENDORSED & PARTNERED WITH THE BEST TUNING HOUSES IN JAPAN & USA PERFORMANCE EXHAUST UPGRADES * ECU REMAPS * DIAGNOSTICS * BRAKE TECHNOLOGY * SUSPENSION TECHNOLOGY * OEM GEAR BOX / ECU SOFTWARE UPDATES * AERO DYNAMIC PARTS * JDM ALLOY WHEELS & TIRES * IMPORT & TECHNICAL ADVISE + MORE….. MY UK NISSAN GT-R APRIL 2009

27th March 2008, 09:36 PM	#8 (permalink)
davew GTROC Member Join Date: Apr 2003 Location: Up North Posts: 2,472	hey Ben, thats fighting talk up north!!! __________________ The GTR Shop - Skyline GTR Breaker and Parts supplier. For all your GTR needs. From 1/2 clips to turbos, seats to shells , harness's to engines. call Mobile 07731304953 GTR店 We ship worldwide.

14th May 2008, 02:31 PM	#12 (permalink)
msia New Users Join Date: Apr 2008 Posts: 3	Ben, just got my R35... HKS VAC far too expensive. Please PM me regarding where I can get the UK-based delimiter please! Many thanks __________________ Porsche 997 Carrera S EVOMS Supercharged Gemballa Bodykit Nissan GT-R R35 JDM Black Black Edition

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27th March 2008, 03:34 PM	#2 (permalink)
TSUCHIYA-KUN GTR Register Member Join Date: Mar 2007 Location: BALEARIC ISLANDS-SPAIN Posts: 385	good info for futures R35 owners.Thx for share it

27th March 2008, 03:41 PM	#3 (permalink)
borat52 GTR Register Member Join Date: Jan 2006 Posts: 168	Excellent post Ben. Many thanks for sharing the info with the forum.

27th March 2008, 04:57 PM	#4 (permalink)
doggiehowser GTR Register Member Join Date: Oct 2007 Posts: 416	Q: does the HKS need splicing to join the ECU harness?

27th March 2008, 06:46 PM	#5 (permalink)
Spooled1.8 GTR Register Member Join Date: Apr 2007 Location: York, PA (USA) Posts: 114	That is definately ALOT easier on the wallet than HKS' solution, thanks for sharing

27th March 2008, 07:09 PM	#6 (permalink)
Armed English GTR Register Member Join Date: Mar 2008 Posts: 142	I'm impressed! Did the GTR beat the 911 Turbo, M3 and R8 around Rockingham in the Car Magazine feature with it's speed limiter in place

27th March 2008, 08:54 PM	#7 (permalink)
Jspeed GTR Register Member Join Date: Mar 2008 Location: Singapura/London Posts: 51	Can u kindly tell me where I can order the UK product? I need one now!

28th March 2008, 01:43 AM	#9 (permalink)
tokyogtr GTROC Member Join Date: Feb 2008 Location: Tokyo Posts: 1,088	this is great. i'll be ordering one of these. one question though is does this product stop the over speed warning light from coming on? once it comes on it will stay on until the car is restarted.

10th April 2008, 04:04 AM	#11 (permalink)
tokyogtr GTROC Member Join Date: Feb 2008 Location: Tokyo Posts: 1,088	so how does one go about ordering either of these? would like one of the asap.

15th May 2008, 01:46 AM	#13 (permalink)
GT-RRR GTR Register Member Join Date: May 2008 Location: Hong Kong Posts: 21	[quote=Benji Linney GTC;866943]I know a few people have JDM cars on route (except davew as he's not as hardcore as he used to be), so some info for you.. This is absoultely fantastic.....Thank you!!! Now all i need is an english owner's manual!! Once again, THANK YOU!!

15th May 2008, 02:16 AM	#14 (permalink)
First GTR Register Member Join Date: Apr 2008 Posts: 138	So for delimit purpose would all of you have chosen this over Mines ECU? Mines add 0.1 bar boost. Isn't that a much better option? TokyoGTR, I suppose you wanted this because the Mines ECU wasn't out then?