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Oct 24, 2016 | 07:44 PM

#21

schpenxel

Race Director

Joined: May 2004

Posts: 16,667

Likes: 1,209

From: Raleigh, NC

St. Jude Donor '15

Installing one of the AGP ones soon.. does look pretty much stupid simple to install

Jan 6, 2020 | 01:36 AM

#22

wesam

Instructor

Joined: Jul 2009

Posts: 164

Likes: 10

Quote:

Originally Posted by Unreal

Yes it is, but for cost/ease of use for a lot of people, the AGP switch works great. Setup 3 of them and they all work perfectly and install quickly.

I'm trying to find how this device is connected or reads the speed of the vehicle but does not found any thing helpful
is it tied to the front speed sensors ?
or read the speed from OBD2

Jan 6, 2020 | 09:23 AM

#23

Unreal

Team Owner

Joined: Nov 2007

Posts: 24,035

Likes: 2,342

From: Gilbert AZ

Speed sensors.

Jan 6, 2020 | 09:24 AM

#24

wesam

Instructor

Joined: Jul 2009

Posts: 164

Likes: 10

Quote:

Originally Posted by Unreal

Speed sensors.

What if the car spins

Jan 6, 2020 | 09:49 AM

#25

Unreal

Team Owner

Joined: Nov 2007

Posts: 24,035

Likes: 2,342

From: Gilbert AZ

Uhh, if you are spinning your front wheels you have other issues.

Jan 6, 2020 | 10:05 AM

#26

wesam

Instructor

Joined: Jul 2009

Posts: 164

Likes: 10

Quote:

Originally Posted by Unreal

Uhh, if you are spinning your front wheels you have other issues.

Thanks for your grate help man
sure I will not spin the front wheels
but I'm asking because the ECM does not have front wheel speed signal it just have the rear wheel speed signal
so my main question was about the speed signal source

Last edited by wesam; Jan 6, 2020 at 10:05 AM.

Jan 6, 2020 | 12:12 PM

#27

jayyyw

Le Mans Master

Joined: Jun 2015

Posts: 6,335

Likes: 1,109

From: Austin Tx

Quote:

Originally Posted by wesam

SIRHC Labs sells a signal converter you can use off the front wheel to get your speed signal.

Jan 9, 2020 | 10:15 PM

#28

FourG63 97GST

Melting Slicks

Joined: Mar 2006

Posts: 2,754

Likes: 380

From: South Florida FL

Quote:

Originally Posted by wesam

I'm trying to find how this device is connected or reads the speed of the vehicle but does not found any thing helpful
is it tied to the front speed sensors ?
or read the speed from OBD2

dabbled with one of those on my buddys TT Camaro, it gets the signal from the ecu, which is rear wheel speed. the Ecu doesn't see individual wheel speeds, as it doesn't use abs data.
so you still have to give yourself enough cushion, to compensate for potential wheelspin.

I run a Holley Ecu, so i added a front wheel speed sensor and C02 on the gates, with the goal hooking on the street, so I run 3psi gate springs, to still achieve functional boost curve on such low springs.
If you can find a boost controller that does C02 and have independent speed inputs, it'll be ideal