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.

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.

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.

:iagree: 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.

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.

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!

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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.

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.

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.

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.

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

He’s not NA… lol


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