ECUTEK = Adjustable Traction Control

2011 Nismo#91 · 09-18-2017, 09:39 AM

Quote:

Originally Posted by Spooler

Do you still have the stock VLSD? This issue went away for me when I installed the OSG LSD. Car is more controlled and TC cutouts have reduced greatly when on. I really have to sling it around to have an issue. I normally run with TC turned off and the car is very predictable. Ecuteck would help me greatly.

Yep, same thing for me when I went with the quaife LSD. Just goes to show how bad that VLSD is.

Jhill · 09-18-2017, 04:12 PM

Quote:

Originally Posted by 2011 Nismo#91

Yep, same thing for me when I went with the quaife LSD. Just goes to show how bad that VLSD is.

Yea I'm on stock vlsd, maybe a qualify or wavetrace in my future but no immediate plans to change.

abm89 · 09-18-2017, 04:27 PM

considering i'm N/A, i've found it very hard to feel the need to install the variable traction control feature. Are you guys seeing any definite benefit on track? I could only think of it being helpful in the wet on a low grip track, otherwise it seems more useful for the boosted folks.

2011 Nismo#91 · 09-18-2017, 06:49 PM

Quote:

Originally Posted by abm89

considering i'm N/A, i've found it very hard to feel the need to install the variable traction control feature. Are you guys seeing any definite benefit on track? I could only think of it being helpful in the wet on a low grip track, otherwise it seems more useful for the boosted folks.

It's more for the amount of kick to it.
On is almost like hitting a wall when it kicks in.
Off is usually too late for it to do much but it's not completely off.
It would be nice to have some choice of middle ground or completely off with out cutting wires and installing switches.

Ape Factory · 09-18-2017, 11:02 PM

Hell I see the benefit on the street. Like 2011 Nismo#91 said, the stock system intervenes too soon and with all the finesse of a sledge hammer. It slams the rear brake on and cuts power. The EcuTek's traction control is just smooth. I can't imagine how much better it must be with a quality limited slip.

Hotrodz · 09-18-2017, 11:37 PM

Quote:

Originally Posted by Ape Factory

Hell I see the benefit on the street. Like 2011 Nismo#91 said, the stock system intervenes too soon and with all the finesse of a sledge hammer. It slams the rear brake on and cuts power. The EcuTek's traction control is just smooth. I can't imagine how much better it must be with a quality limited slip.

After getting my lsd it was such a huge benefit I advocate that it should be one of the first mods after an oil cooler if you are serious about getting power to the ground, NA or boosted. It give you so much more control especially with the car wants to step out. Predictability and confidence take a huge leap forward and I have no problem running with very little tc dialed in because of it.

Silly Rabbit · 09-23-2017, 04:32 PM

Quote:

Originally Posted by Hotrodz

Just push up on the cruise control toggle and watch the gauge on the oil temp. It will move up to were the tc is set at and then fall back to what the oil temp really is. Press it up again and when it rises and stops, press down on the toggle and stop when it get to the setting you desire.

Checked and nothing happened. Is there somewhere in the software to turn this on\off? I tried with factory traction control on and off.

Memphis370Z · 09-23-2017, 05:16 PM

Quote:

Originally Posted by Silly Rabbit

Checked and nothing happened. Is there somewhere in the software to turn this on\off? I tried with factory traction control on and off.

This wasn't part of what you and I did a couple of years ago. Seb added it to my Z a few months ago when I got re-tuned.

Hotrodz · 09-23-2017, 05:34 PM

Quote:

Originally Posted by Silly Rabbit

Checked and nothing happened. Is there somewhere in the software to turn this on\off? I tried with factory traction control on and off.

Yeah all functions only work with vdc off and cruise control off. Yea would know if you press the toggle up. Also if you have Bluetooth dongle it would be in the menu on your phone!

Sent from my SM-N910P using Tapatalk

DarkJak · 04-02-2023, 09:05 PM

Super old thread but actually one of the first results if I search on Google (and not seeing much newer here)
I wanted to add my experiences with my Z which is currently being tuned by Eugene on the rotrex kit, and traction control.

For background, I always tracked my car with TC off, run an OSG LSD, and have also been tracking/autocrossing a 2007 Exige S with Lotus OEM traction control that behaves very similarly to motorsports TC, but my year didn't get the adjustment knob for controlling slip. So it's always targeting what feels like 0 slip.

The Ecutek TC is a huge step up from stock. Where stock would cut power for what feels like a full second and be extremely jarring to the car, to the point of inducing lift-off throttle effects, the ecutek TC actually behaves like a sort of ok mimic of the Lotus TC.
However, it is a bit slow to react. It seems to be easy to blow by, RPM wise. Like in 2nd gear with the SC, the car will pretty much spin up to almost redline before TC kicks in.

In 3rd, the TC usually has a chance to intervene in a meaningful way, and does an ok job at limiting slip while still allowing power.

4th, I haven't gotten wheelspin yet, but have only been testing on the street in a straight line.

The real test will be how it behaves out of corners. The Lotus TC, I can peg the throttle, car car will cut spark/fuel as necessary to keep the tires from slipping, and I can get a corner exit maybe 90% as good as optimal with minor slip. Better than I could get while I was still learning the car.

Tractionless · 04-09-2023, 11:28 AM

Going to hit up Eugene about this tomorrow for my tune as well. Definitely want all the bells & whistles.

Waiting on AT launch control until I upgrade the flex plate and torque converter though.

DarkJak · 04-10-2023, 01:25 PM

Got some vids this weekend! I will be editing it and uploading to Youtube. Hopefully this evening.

So some more observations: 1st does not handle it well at all. The power gets shut off for 1-2 seconds like OEM. (ugh!)
2nd and up does well though! 2nd I can get it to reliably trigger at higher RPMs.
My theory from just observing behavior is that different methods of control are hit based on percent difference from current wheel speed vs target wheel speed. At low differences, we are getting less invasive cuts. At higher speed differences, I think it falls back to the OEM style of TC. This is in line with the strategies I've read into on fully aftermarket TC solutions. The difference in Ecutek vs motorsports style solutions seems to come down to polling rate.

DarkJak · 04-11-2023, 11:18 PM

EDIT:
Demo
https://www.youtube.com/watch?v=NN0nMI9tMI0

Found Ecutek's documentation on 370Z traction control. Looks like they have a traction control table that retards ignition timing for given wheel slip percent and engine RPM, as well as a table that multiples throttle (meant to be 0-1.0 multiplier) as well.

I'd love to be able to play around with this more myself because I think setting intervention at lower wheel slip angles would help a lot. A problem I'm seeing based of the example tables is there is not much resolution for single digit slip percentages. Without knowing what the table setup is, currently, I'd have a tough time tuning. Plus relying on Eugene or another tuner to make adjustments is a big barrier to testing and refining.

Quote:

Using Custom Maps it’s possible to create Traction Control maps that will reduce engine torque for a given wheel slip ratio%

You can find a Traction Control Example ROM in your 370z folder, see Section 5.7 for its location.

To create Traction Control we only need two Custom Maps, in the Example ROM we used maps D and E

Custom Map D – Ignition Timing Retard
X axis is Wheel Slip Ratio%
Y axis is Engine Speed
The Map Output will be added to the current ignition timing for a given Engine Speed and Wheel Slip Ratio

As the differential speed between front and rear wheel speed increase then more ignition retard is applied and the engine torque will be reduced, as the RPM increases the retard amount is increased further reducing engine torque avoiding the fuel cut rev limiter

Custom Map E – Throttle Multiplier
X axis is Wheel Slip Ratio%
Y axis is Engine Speed
The Map Output will multiply the current Throttle Target for a given Engine Speed and Wheel Slip Ratio

As the differential speed between front and rear wheel speed increases the throttle target will be reduced by the map output multiplier. Due to two large diameter throttle butterflies being fitted we need to significantly reduce the throttle opening amount at low RPM (low airspeed) for the closing throttle to actually achieve any worthwhile reduction in airflow and therefore engine torque

The Traction Control can be further enhanced with the addition weighting factors like vehicle speed, steering angle, G force lateral and rotational and we can even set up a dash mounted potentiometer and import the 0v - 5v signal to be used as an overall gain from the aggression of the feature

Spooler · 04-12-2023, 07:58 AM

Learn to drive without the Traction Control. Who needs it on a NA 370z.

Averying · 04-12-2023, 08:24 AM

Quote:

Originally Posted by Spooler

Learn to drive without the Traction Control. Who needs it on a NA 370z.

He’s not NA… lol

Sent from my iPhone using Tapatalk

09-18-2017, 04:27 PM	#33 (permalink)
abm89 A True Z Fanatic Join Date: Feb 2013 Location: Austin, Texas Posts: 1,386 Drives: 11 370Z \| 24 EL450 Rep Power: 64764	considering i'm N/A, i've found it very hard to feel the need to install the variable traction control feature. Are you guys seeing any definite benefit on track? I could only think of it being helpful in the wet on a low grip track, otherwise it seems more useful for the boosted folks. __________________ Complete Parts List: https://github.com/abm89/ztouge-build

09-18-2017, 11:02 PM	#35 (permalink)
Ape Factory Base Member Join Date: Apr 2016 Location: San Antonio Posts: 210 Drives: Audi RS5/QX70S Rep Power: 9	Hell I see the benefit on the street. Like 2011 Nismo#91 said, the stock system intervenes too soon and with all the finesse of a sledge hammer. It slams the rear brake on and cuts power. The EcuTek's traction control is just smooth. I can't imagine how much better it must be with a quality limited slip. Hotrodz likes this. __________________ '13 Audi RS5 Misano w/mods-The Red Mist '13 G37 IPL-SOLD

04-02-2023, 09:05 PM	#40 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	Super old thread but actually one of the first results if I search on Google (and not seeing much newer here) I wanted to add my experiences with my Z which is currently being tuned by Eugene on the rotrex kit, and traction control. For background, I always tracked my car with TC off, run an OSG LSD, and have also been tracking/autocrossing a 2007 Exige S with Lotus OEM traction control that behaves very similarly to motorsports TC, but my year didn't get the adjustment knob for controlling slip. So it's always targeting what feels like 0 slip. The Ecutek TC is a huge step up from stock. Where stock would cut power for what feels like a full second and be extremely jarring to the car, to the point of inducing lift-off throttle effects, the ecutek TC actually behaves like a sort of ok mimic of the Lotus TC. However, it is a bit slow to react. It seems to be easy to blow by, RPM wise. Like in 2nd gear with the SC, the car will pretty much spin up to almost redline before TC kicks in. In 3rd, the TC usually has a chance to intervene in a meaningful way, and does an ok job at limiting slip while still allowing power. 4th, I haven't gotten wheelspin yet, but have only been testing on the street in a straight line. The real test will be how it behaves out of corners. The Lotus TC, I can peg the throttle, car car will cut spark/fuel as necessary to keep the tires from slipping, and I can get a corner exit maybe 90% as good as optimal with minor slip. Better than I could get while I was still learning the car. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

04-09-2023, 11:28 AM	#41 (permalink)
Tractionless A True Z Fanatic Join Date: Jan 2016 Location: Atlantic SE Posts: 1,326 Drives: '10 K23 ST 7AT Rep Power: 30526	Going to hit up Eugene about this tomorrow for my tune as well. Definitely want all the bells & whistles. Waiting on AT launch control until I upgrade the flex plate and torque converter though. Memphis370Z and Averying like this. __________________ Toys Not Tots

04-10-2023, 01:25 PM	#42 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	Got some vids this weekend! I will be editing it and uploading to Youtube. Hopefully this evening. So some more observations: 1st does not handle it well at all. The power gets shut off for 1-2 seconds like OEM. (ugh!) 2nd and up does well though! 2nd I can get it to reliably trigger at higher RPMs. My theory from just observing behavior is that different methods of control are hit based on percent difference from current wheel speed vs target wheel speed. At low differences, we are getting less invasive cuts. At higher speed differences, I think it falls back to the OEM style of TC. This is in line with the strategies I've read into on fully aftermarket TC solutions. The difference in Ecutek vs motorsports style solutions seems to come down to polling rate. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

04-12-2023, 07:58 AM	#44 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,919 Drives: 2013 Nismo 370z Rep Power: 2684392	Learn to drive without the Traction Control. Who needs it on a NA 370z.

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