s13 speedo question

[s14a Ben]

does anyone know what the PPM (pulse per mile) is on the s13 speedo? and on the RB25DET gearbox?

thank you
ben

[John Bennett]

Dunno pulses per mile (depends on your differential and tyre diameter), but the CA18 sender gives out 16 sine-waves per revolution, and the RB25 gives out 8. .
I made my own converter for my S15 box, but someone has to try one from dakota digital and see if they work :thumbs:
http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=126/category_id=287/home_id=59/mode=prod/prd126.htm

[s14a Ben]

ah lovely stuff. well i found that site the other day so i ordered one. when it comes through i shall report my findings.

cheers john