DIY Traction Control

[efi_student]

Without a doubt.  Selectable slip percentages, and a small host of
options that really work.  All of the features that have been discussed
so far were OEM on the '93 and later Toyota Supra turbo, including
ignition retard, a device to actuate the rear brakes automatically, fuel
cut, and a subthrottle blade controlled by a motor.  In fact, there is
also an accelerometer in the car so that you can't exceed 0.94 lateral
g's without invoking the traction control.  I really hate it.  Just when
I want some drive out of a turn with a little opposite lock the TRAC
cuts in and shuts down all the fun.  IMO it can also be a bad thing.
Just when you need some power to change the heading of the car to
prepare for a course change, it steps in and foils your plan.  That
said, there have been a couple of owners on the MkIV list that have
bought the Racelogic unit.  They universally rave about its outstanding
performance.  The OEM system is so disliked that there are complete
instructions on the website for disabling and even removing the entire
stock system.  That should say a lot about OEM vs. race quality traction
controls.  Obviously TC can be very good and very bad.  Keep that in
mind while designing your own...

Lance

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org] On
Behalf Of bill.shurvinton at nokia.com
Sent: Thursday, January 24, 2002 6:51 AM
To: diy_efi at diy-efi.org
Subject: RE: DIY Traction Control


Please remember that the racelogic unit is 'race proven'. The SW was
written for F3 racing (until it was banned). They offer both fuel and
spark cut variants. The adjustable slip angle is a nice toy for those of
us whose BHP exceeds our ability.

If you have the money, this is the baby to buy.

Bill

-----Original Message-----
From: ext Crescent Kao [mailto:crescent at c-speedracing.com]
Sent: 24 January, 2002 6:56
To: diy_efi at diy-efi.org
Subject: DIY Traction Control


Hello,
  I've been following your TC/ABS discussion over the past week or so.
I've had this idea in my head for quite some time but never really got
around to trying to implement it - a traction control system that
utilizes the stock ABS sensors on the vehicle.
  There's currently a company that already produces a bolt in kit that
does the exact same thing, and will cut the fuel momentarily during
excessive wheel spin. Upgraded kits offer user specified wheel spin.

Here's the url:
http://www.racelogic.co.uk/

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