abs delete

[puma]

I can't find anything on the forum, can't use 3 letter words, anyone knows if there is a topic somewhere about ABS delete?

Please don't tell me it is not worth it yadada, i just want info on it, mostly about wiring because i think the speedo will stop working and unsure about the rear brake light. I want to know the downside electrically.

thanks

[wparsons]

If you totally disable it, you'll lose EBFD which will mean you'll probably want to plumb in a traditional proportioning valve (adjustable or not) to keep the front/rear bias how you want it.

You should be able to disable ABS without removing the wheel speed sensors/wiring, which means you should still have a speedo.

[puma]

yeah a proportionning valve will be installed.

Maybe i wasn't clear enough, i want to disable it but mostly, i want to take it all off, including the wiring. i want to take the whole module out. What i fear is that if i want to take the module off and leave the connector unplugged, i won't have any speedo because the speed sensor seems to send their signal to the abs module and from what i understand it sends the info to the ecu by CAN.

[diss7]

Just pull the fuse to the abs pump. That will prevent it from ever interferring, but retains speedo function because sensors are still in place.

That's what I've done.

[puma]

yeah i guess there is no way around it, just wondering how chasebays was able to remove theirs physically.

[wparsons]

Have you confirmed they have the stock speedo working off the stock wheel speed sensors?

In all honesty, how badly do you need a speedo in a race car? I never look at the speedo on the track, you need to be able to judge speed looking out the front, not looking down at the speedo.

[puma]

i will be making more test eventually, my concern is does the ecu uses the speed for something?

In fact, i don't need it that much because i will have a AIM dash and it can provide speed based on the gps. But, it does log the 4 sensors which tells you if you have a wheel that locks up and if so, which one. This is more important than speed itself.

[wparsons]

If you're removing ABS and TC/VSC, the ECU doesn't use speed for anything at all except calculating which gear you're in, which only gets used on the cluster.

The ECU won't be logging if/when you locked up a wheel, or which one you locked up.

[Shim]

@diss7 started a thread about pulling the ABS fuse a few months ago, but it turned nasty instead of helpful. http://www.ft86club.com/forums/showthread.php?t=54687

[wparsons]

What's your end goal with removing everything ABS related? It sounds like you're doing it "because racecar", and not with a specific goal in mind?

[continuecrushing]

because racecar is the specific goal in mind lol

[puma]

yes, we are building a race car, we want to make a new braking system to have an adustable brake proportionning valve and i am trying to save as much weight as i can.

I plugged my AIM in the obd2 today and unplugged the abs and i am losing all 4 speed sensors (which i can log with my AIM, not log with the stock ECU obviously) So i guess i am stuck with using as least the abs electronics to log my speed sensors. (I beleive i had a couple of sensors that stopped working also, can't remember which one though.)

There are 4 screws on the ABS that seem to scream my name to remove the electronic from the mechanical part of the abs but i am afraid to mess something up...

[diss7]

If you're building a race car, speedo doesnt matter.. ?

The last thing I do at the track is look at what speed I'm doing...

[puma]

i know, i don't mind about speed i am afraid the ECU might use the speed for some other correction factor.

Although i do need a speedo because i got to have the 50km/h pit lane speed but i can get that wih my electronic dash.