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Old 04-30-2004, 11:17 AM   #1
donmei
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Default STI - Can you disable ABS for Track Use? Would you want to if you could?

Dear All,

I am mentally preparing myself to put my new STI on the track for the first time. I realize that ABS does a better job than I could ever do for pretty much all of my street driving. However, having spend some time on a race track, I'm aware of the concept that if you are begining to spin and you like where you're headed, lock the brakes, then the car will continue to slide in a straight line.

Well, we can't do that in an ABS equipped car. Has anyone addressed this, or am I worrying about nothing.

My wife has warned me that if I wadd up the STI, I'd better not even bother coming home.

This "lock em up" tactic has saved my butt in the past, once even on the street. But I was young and invincible then.

Don
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Last edited by donmei; 04-30-2004 at 11:58 AM.
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Old 04-30-2004, 11:45 AM   #2
jmott
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there is a fuse you can pull, I think its obvious if you just pull the fuse cover (the one INSIDE the car) and look at the diagram on it
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Old 04-30-2004, 02:46 PM   #3
afpdl
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There is a fuse but if you pull it it disables the EBD and your brake bias will go heavily to the rear and I belive the dccd uses the abs sensors too. So you can disable abs but along with it y ou will diable alot of other stuff.
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Old 04-30-2004, 02:52 PM   #4
lukerussell
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afpdl is correct. i accidentally disconnected a wire going to my abs sensor and it screwed my dccd all up (no damage, it was just acting really weird). i'm sure that pulling the fuse would have the same effect. the dccd and abs are controlled by the same sensor.

luke
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Old 04-30-2004, 04:14 PM   #5
donmei
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Thank you all for your input. Hmm too bad it messes with the brake biasing as well as the dccd.

Don
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Old 04-30-2004, 04:49 PM   #6
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Quote:
Originally posted by donmei
Thank you all for your input. Hmm too bad it messes with the brake biasing as well as the dccd.

Don
it is probably for the best anyway. =)
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Old 04-30-2004, 05:37 PM   #7
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If this is going to be your first time on a track with the STi, I recommend that you shouldn't go as fast as to be "on the limit braking". Its really amazing how much you'll learn about the car going 6/10 or 7/10 than 9/10 or 10/10.

At Mid Ohio, I was more than happy to have the ABS ON. You can really brake deep compared to many others without going to 100% limit braking. (I use to do extensive testing at a racetrack in Europe in Peugeot 305,406,605T's with ABS on and off.)

I totally understand your argument about locking up and going straight. You will also lose some feel with ABS on (as you already know) however I feel that it is much more worth to have it on.

Have Fun,

Davis
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Old 05-01-2004, 02:30 PM   #8
Snowphun
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All my track cars were old enough to not have ABS, but many people I used to race with were happy leaving it on. It gave them the time to concentrate on their line and traffic, and still go deep into the braking zones.

IMO, I'd leave it on and see how it feels. I imagine you'll like it.

Paul
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Old 05-01-2004, 07:23 PM   #9
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With the "older" Subarus that had ABS, if you got the car rolling along, took it out of gear, grabbed the hand brake and locked the rears while the front was still rolling it would "confuse" the ABS, causing it to shut itself off until you restarted the car.

Does anyone know if this might still work, or is the ABS tied into so many other things now that it won't?

Matt Kennedy
www.RockyRoadRacing.com
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Old 05-01-2004, 07:26 PM   #10
afpdl
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Not positive but im going to go with
Quote:
Originally posted by RRR-K2

Does anyone know if this might still work, or is the ABS tied into so many other things now that it won't?
At least for the sti.
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Old 05-01-2004, 07:59 PM   #11
donmei
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Davis,

Thanks for the input. Good point about staying well below 10/10ths. I'm not new to a race track. I used to road race 250 GP bikes with a motorcycle club called AAMRR in the 80s. I've probably got 2000 laps at the old Bryar Motorsport Park (Now NHIS) I've also got a fair amount of time at Pocono (the course with the chicane and the infield), as well as Bridgehampton and Summit point.

BUT . . and its a big but. I've never done anything other than the odd track day (with a rental car - as in Thrifty) and a little autocrossing, which I'm not very good at in a CAR. I am very inexperienced with a car on a race track.

I am also a HUGE believer in the concept that if you can't go smooth, you'll never go fast. So my first day will be devoted to going smoothly and managing weight Xfer. Its funny, I asked if I could use my wife's Miata. Its much easier to drive well than the STI. Much less power and much less shift in handling between trailing throttle and on throttle. That request was met with a cold stare. Ha Ha.

I will not get into the ABS or any serious threshold braking. I may even do a little mind trick I used to do with my old 900 Turbo. Pretend that the redline is 5000 rpm. Then I don't have to worry about learning to deal with so much power at first. (in the STI, not the 900. In the 900 it was to minimize abuse)

Thanks for the thought. It put me on the right track as far as first few days. Although I'd still like to be able to turn it off so I can spin straight if I ever get into that situation.

Don
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