xfi users with 275 60 15 rear tire

[northerngn]

what numbers do you have punched in so that the mph in the xfi reads close to actual speed??
hoping someone can go and take a quick look see
-dan

 

[disco stu]

610

 

[northerngn]

which box?
driveshaft rpm calib
or mph calibration

currently my boxes are
driveshaft rpm 1800
mph 643

stu what are yours?
where does the 610 go

 

[disco stu]

Driveshaft RPM 1800
MPH 610

Hope that helps.

I'm not sure exactly how accurate this was, it just matched the speedo. I should have confirmed it by GPS

 

[northerngn]

i cruised this sat with that setting but still seems off
post back if you can verify setting against a gps
otherwise ill be searching for one of those police flashing mph signs they put in random areas and calibrate against that
-dan