Jump to content

Photo

NC/MX5 and the RX8 ABS controller

- - - - -

  • Please log in to reply
6 replies to this topic

#1
Jeff Wasilko

Jeff Wasilko

    Member

  • Members
  • PipPipPip
  • 224 posts
  • Location:Boston, MA
  • Region:NER
  • Car Year:1995
  • Car Number:08

Some friends and I are in the midst of a NC build for AER. It looks like the PWC TC cars were allowed to switch to the RX8 ABS pump and controller. What benefit came with that and is it plug and play or is there other work to do?

 

Thanks!

 

http://files.world-c...-MX5-AltABS.pdf



#2
luvin_the_rings

luvin_the_rings

    Member

  • Members
  • PipPipPip
  • 142 posts
  • Location:Los Angeles, CA
  • Car Year:1990

after some quick searching here: 

http://www.sccaforum...rums/aft/392890

 

 

NC mazda miatas have "Ice Mode" in their ABS controller.  I guess the RX8 does not.  

 

Ice mode is a safety system which cuts off brake assist when it thinks you're driving on ice and one wheel is completely locked up for a really long time.  it happens when your lift a wheel during cornering on a track with sticky tires and stiff bars.  You can also just pull the ABS fuse and disable it all together when you race then plug it in on the street. 

 

if you want ABS when your racing, then swapping to the RX8 setup could be safer so you don't loose brake assist after a long sweeper. 

 

-Z



#3
Jim Drago

Jim Drago

    East Street Racing / 2 Time National Champion

  • Administrators
  • 5,592 posts
  • Location:Memphis, Tn
  • Region:Mid South
  • Car Year:2000
  • Car Number:2

after some quick searching here: 

http://www.sccaforum...rums/aft/392890

 

 

NC mazda miatas have "Ice Mode" in their ABS controller.  I guess the RX8 does not.  

 

Ice mode is a safety system which cuts off brake assist when it thinks you're driving on ice and one wheel is completely locked up for a really long time.  it happens when your lift a wheel during cornering on a track with sticky tires and stiff bars.  You can also just pull the ABS fuse and disable it all together when you race then plug it in on the street. 

 

if you want ABS when your racing, then swapping to the RX8 setup could be safer so you don't loose brake assist after a long sweeper. 

 

-Z

I had this happen in my t4, When it does.. in short you are screwed.. I had no brakes and right into the tire wall.   The cars need ABS, they are a full second a lap slower with no abs. I pulled fuse after that deal as it scared the @#$% out of me.  If that is an option, I suggest doing it

Jim 


East Street Auto Parts
Jim@Eaststreet.com
800 700 9080

Hoosier Super Tour points Champion - Hoosier Super Tour points Champion ARRC Champion - Won the ARRC Race in a Spec Miata Series Champ - Won a points based series in a Spec Miata BFG Supertour Winner - Majors Winner - Circuit of the Americas Winner - We have a Winnah! - Won their 1st race... Congratulations! June Sprints winner  - June Sprints winner June Sprints winner  - June Sprints winner June Sprints winner  - June Sprints winner June Sprints winner  - June Sprints winner SCCA National Champion - Won SCCA Runoffs at Road America SCCA National Champion - Won SCCA Runoffs at Road America

#4
Jeff Wasilko

Jeff Wasilko

    Member

  • Members
  • PipPipPip
  • 224 posts
  • Location:Boston, MA
  • Region:NER
  • Car Year:1995
  • Car Number:08

Jim: Did your car have DSC ?

 

Thanks!



#5
Jim Drago

Jim Drago

    East Street Racing / 2 Time National Champion

  • Administrators
  • 5,592 posts
  • Location:Memphis, Tn
  • Region:Mid South
  • Car Year:2000
  • Car Number:2

Jim: Did your car have DSC ?

 

Thanks!

No DSC on my car


East Street Auto Parts
Jim@Eaststreet.com
800 700 9080

Hoosier Super Tour points Champion - Hoosier Super Tour points Champion ARRC Champion - Won the ARRC Race in a Spec Miata Series Champ - Won a points based series in a Spec Miata BFG Supertour Winner - Majors Winner - Circuit of the Americas Winner - We have a Winnah! - Won their 1st race... Congratulations! June Sprints winner  - June Sprints winner June Sprints winner  - June Sprints winner June Sprints winner  - June Sprints winner June Sprints winner  - June Sprints winner SCCA National Champion - Won SCCA Runoffs at Road America SCCA National Champion - Won SCCA Runoffs at Road America

#6
Clark18

Clark18

    Junior Member

  • Members
  • Pip
  • 4 posts

Jim-I'm assuming the braking issue you're talking about was your off at Grattan.  Had you locked the brakes in the corner before your issue, or did something else happen to cause this "ice mode"?



#7
luvin_the_rings

luvin_the_rings

    Member

  • Members
  • PipPipPip
  • 142 posts
  • Location:Los Angeles, CA
  • Car Year:1990

Swapping the ABS controller and pump might change how the ABS is applied, but I wonder how it can actually hurt the car and make it slower.  Might it change the brake balance some how? I think the brake bias is built into the master cylinder no?






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users