Threshold braking issues in the 3 - Page 2 - Mazda3 Forums : The #1 Mazda 3 Forum
Reply
 
LinkBack Thread Tools
post #11 of 21 (permalink) Old 08-06-2014, 02:31 AM
Le Mans: Prototype Class
 
Adam3s's Avatar
 
Join Date: Sep 2009
Location: Illinois
Posts: 1,225
Quote:
Originally Posted by philrab View Post
Why not just unplug the ABS module?
Because the rules are very specific about what is allowed and he wants to adhere to those standards. Someone can't just go unplugging whatever they feel like unplugging, particularly when they're a current Solo National champion like the OP is.
Adam3s is offline  
Sponsored Links
Advertisement
 
post #12 of 21 (permalink) Old 08-06-2014, 09:38 AM
Grand Am Series
 
dgross7's Avatar
 
Join Date: Mar 2012
Location: Urbana, MD
Posts: 464
Garage
I wonder if we can side step this issue all together. Does someone want to pull the abs fuse and then do some brake testing to see if this actually fixes the threshold issue?

I have a non-scca event this weekend, I'll pull it and report back. It doesn't happen to me all that often though so I may not see a difference.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
dgross7 is offline  
post #13 of 21 (permalink) Old 08-06-2014, 10:18 AM
F1 Driver
 
XCNuse's Avatar
 
Join Date: Jun 2009
Location: Atlanta, GA
Posts: 14,003
Does anyone know for a fact we can pull the ABS fuse all willy-nilly and be alright?

As you know the car uses the ABS sensors for quite a bit, I'm just wondering if the ABS fuse is only the brake purpose of those sensors.

Otherwise you'll lose power steering along with it as well (which is no bueno on a power rack), and your speedometer, and a few other lesser essentials.

'06 Whitewater Pearl build |
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
XCNuse is offline  
Sponsored Links
Advertisement
 
post #14 of 21 (permalink) Old 08-06-2014, 11:31 AM
Senior Member
 
john_in_the_lbc's Avatar
 
Join Date: Apr 2006
Location: Long Beach, California
Posts: 31,080
I don't think defeating the ABS will necessarily disable the brake-assist feature.
it is reading pedal action. read this:
http://auto.howstuffworks.com/car-dr...ke-assist2.htm

https://www.youtube.com/watch?v=I8GA-l3Iwts

It may be adaptive, so if you always slam on the brakes, it might stop kicking in.

2006 Whitewater Pearl Mazda 3 S GT Hatch: Garage Vary Valiant Lip, Grill and Eyelids : Custom JL/Alpine Audio : MazdaSpeed Accessory Springs and Swaybars : JDM MazdaSpeed Strut Bar : Koni Yellows : 5Zigen Pro Racer zr520 : Continental ExtremeContact DW : Buddy Club Condenser : XE Pedals : Black Rays Lugs : HP Tint : Stubby :
My car thread
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by john_in_the_lbc; 08-06-2014 at 11:36 AM.
john_in_the_lbc is offline  
post #15 of 21 (permalink) Old 08-06-2014, 09:46 PM Thread Starter
Short Track Racer
 
eSienk's Avatar
 
Join Date: Jul 2010
Location: Charlotte, NC
Posts: 156
From my 5 minute research it looks like all but the 2.0 Mazda 3s have Electronic Brake Distribution. This could cause a huge issue if we disable ABS. I've autocrossed an E36 for an entire season without ABS. You know when Miatas are not setup properly and they lock the inside front into everything? Like that but way worse.
eSienk is offline  
post #16 of 21 (permalink) Old 08-06-2014, 09:51 PM Thread Starter
Short Track Racer
 
eSienk's Avatar
 
Join Date: Jul 2010
Location: Charlotte, NC
Posts: 156
Quote:
Originally Posted by john_in_the_lbc View Post
Thanks for that video. That's exactly what's going on. Anyone know how to legally defeat EBA?

edit: Found this post but no help
http://www.mazda3forums.com/showthread.php?t=281421

Last edited by eSienk; 08-06-2014 at 09:58 PM.
eSienk is offline  
post #17 of 21 (permalink) Old 08-06-2014, 11:33 PM
F1 Driver
 
XCNuse's Avatar
 
Join Date: Jun 2009
Location: Atlanta, GA
Posts: 14,003
Looks like it's controlled by the ECU - I assume - according to the wiring diagrams.

One section of the ABS control module is handled off to what it refers to a CAN bus to "data link connector-2" which I can only assume is ECU related.

That said, looking into it... this is a sketchy test, but I'm wondering if you ground out or cancel out the connectors on the plug?

The harness that connections has what looks like can be 26 connectors.
There is a wire, BR/G on top, 2nd to far right, IS that data connector.
There should be a wire below it which would be the second wire.. but it doesn't show anything, just says "*" for the wire color.

As a warning, this is coming from an 04 manual, for you have a speed, it may [may] be different.

'06 Whitewater Pearl build |
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
XCNuse is offline  
post #18 of 21 (permalink) Old 08-07-2014, 12:22 PM
F1 Driver
 
XCNuse's Avatar
 
Join Date: Jun 2009
Location: Atlanta, GA
Posts: 14,003
Thinking about it on a side note; isn't this the exact same issue the Playboy series Spec Miata guys have?

Isn't that why they tap the brakes before going into a turn to "reset" the system?
If it is the same case, and those guys haven't come up with a solution; I doubt we ever will.

'06 Whitewater Pearl build |
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
XCNuse is offline  
post #19 of 21 (permalink) Old 08-07-2014, 12:51 PM
Grand Am Series
 
dgross7's Avatar
 
Join Date: Mar 2012
Location: Urbana, MD
Posts: 464
Garage
I should be careful researching those teams here at the office...


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
dgross7 is offline  
post #20 of 21 (permalink) Old 08-07-2014, 10:28 PM Thread Starter
Short Track Racer
 
eSienk's Avatar
 
Join Date: Jul 2010
Location: Charlotte, NC
Posts: 156
Quote:
Originally Posted by XCNuse View Post
Isn't that why they tap the brakes before going into a turn to "reset" the system?
Hmmm, so I'm assuming that fools the computer into thinking it's not an emergency stop scenario? I'll try that in the 3 and see if it makes a difference.
eSienk is offline  
Sponsored Links
Advertisement
 
Reply

  Mazda3 Forums : The #1 Mazda 3 Forum > Technical / Model / Performance > Autocross, Track, and Dyno Results

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mazda3 Forums : The #1 Mazda 3 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  LinkBacks (?)
LinkBack to this Thread: http://www.mazda3forums.com/90-autocross-track-dyno-results/639233-threshold-braking-issues-3-a.html
Posted By For Type Date
Threshold braking issues in the 3 - Mazda3 Forums : The #1 Mazda 3 Forum This thread Refback 12-07-2017 03:31 AM
Autocross, Track, and Dyno Results [Archive] - Mazda3 Forums : The #1 Mazda 3 Forum This thread Refback 09-06-2015 02:25 PM

Similar Threads
Thread Thread Starter Forum Replies Last Post
Having vibrating/shaking issues...while braking? FrostyFire Suspension / Brakes 7 03-24-2007 12:17 PM
Interesting Article about Engine Braking vs. normal braking Bartizek Suspension / Brakes 9 06-01-2006 11:14 AM
TPMS Threshold (TSB) davecombs Wheels / Tires 3 10-03-2005 02:00 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
8