GTM Racelogic Traction control Review

BigT

How can launch control work on an A/T when their is a torque converter in the way? I think some people are a little confused. But, the traction control feature should be great for when you're actually moving.

Sh0velMan

Doesn't mater if there is a converter or not.

It just looks at a couple things:


1) Is there throttle input?
2) Are any of the wheels moving?

If the answer to 1 is YES but the answer to two is NO, boom, engage launch control. Hold revs at pre-determined point until those factors change, allow a prescribed amount of drive wheels vs non drive wheels slip factored with a user-determined ratio of desired slip, disengage once drive and non drive wheel speed are within the desired envelope.

It's as simple as that, though I am sure they use other factors for reliability and safety. (Like clutch or brake sensors etc)

Absolutely no reason this won't work on an ATX car.

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BigT

I'm confused. So you're saying that this electronic device while raise the stall on the stock converter?

Mitco39

No, you set the artificial rev limiter to match your stall speed so you dont have to module it with your go pedal. Say your stall is 2500rpm, throw up say a 2800-3000 rev limiter and use your brakes to hold you back. Then you can go to WOT and as soon as you get moving the traction control will do the rest.

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BigT

Yea, thanks, I was referring to launch control. Not, traction control. How are you going to set your rev limit to 3000 when your stall limit is 2500?


Launch control is pointless with a stock stall and or stock tires. Traction control is good though, i guess. It should help ET's, but lower trap speeds.

Mitco39

lol.

You want to be right at your stall speed (I goofed on my last post) so that you load up your drive train and nothing less. Try as you might to do it manually your RPM will fluctuate and not be smooth, not to mention you will spend more time looking at your RPM than watching the tree (assuming were on a drag strip). You want to push your car as hard as your brakes will allow, depending on the tightness and characteristics of the car (IE traction) this might be.

I dont know about your car, but a stock 370z will have no issues spinning the tires while getting ready to launch in 1st gear, you might want to check that out if your car cannot do that. Im sure everyone has done a brake stand at some point.

Where it really comes in handy is with the AWD cars, Then you can use all 4 tires to hold back the car and really load it up. Rearwheel your limited.

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2007 Chevy Duramax - EFILive Tuned By Me
2010 40th W/ Nav - Boosted Performance - UpRev Tuned By Me
The Mrs. Ride -2012 335XI N55 BMW - Cobb Tuned By Me, Built by her
My Build --> http://www.the370z.com/members-370z-...39s-build.html

BigT

You're making this out to be very complicated. I've had 2 evo's and a DSM. I know how launch control works.

What I still don't get is how this device is holding the car back? The stock converter is constantly holding the motor back if your feet are on the brakes. Not the launch control. The stock converter is what sets your RPM, nothing more, nothing less. Outside of throttle input. I say launch control does absolutely NOTHING for an automatic.

Also, how many of you have ever heard of a drag car using traction control? This really makes no sense. Get better tires if you are having problems.

This device is more directly related for a manual tranny when it comes to launching.