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-   -   BMW VSS pulses per mile (http://www.clubcobra.com/forums/backdraft-racing/96154-bmw-vss-pulses-per-mile.html)

Gatorac 04-09-2009 03:14 PM
BMW VSS pulses per mile
 
I'm trying to hook up cruise control in my BDR. Anyone knonw the approximate pulses per mile from the factory VSS?

Thanks a pile.

xlr8or 04-09-2009 04:31 PM
That will depend on the number of teeth on the drive and driven gears. Could vary greatly.

Cashburn 04-09-2009 06:33 PM
BMW VSS is 7100.

JUS BIT 04-09-2009 08:26 PM
Actually, it depends on the rear end gear and the size of tires. If you have 17" wheels and tires, and the rear gear is the newer standard 3:46, then it will be 7960.

If you have taller tires, then the number would go down. I tested this with another car driving side by side at different speeds, and lately I have used the GPS to test it as well.

Bests, James

Gatorac 04-10-2009 07:19 AM
Thanks.
With some tweaking, I got it to work off of the tach sigal only. The Audivox tech guys are not very helpful.

I will do a write up on the install for future reference. Some of the dip switch settings in the instructions are not correct for the V8 engines in a Cobra.

madmaxx 04-10-2009 08:14 AM
sacreligious to put cruse control in a cobra, boredome is the devel workshop!!!

Gatorac 04-10-2009 08:36 AM
Quote:
Originally Posted by madmaxx (Post 938774)
sacreligious to put cruse control in a cobra, boredome is the devel workshop!!!

Spoken like someone that puts 250 miles a year on thier Cobra.:rolleyes:

Rwillia4 04-10-2009 10:21 PM
If your speedo is correct you can follow the directions to calibrate it and see what the VSS is currenty set for.

Doug I 04-13-2009 12:33 PM
Interesting idea !!

Was it easy? hard?


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