Speedo Calibration

[Craig]

So, I know that the speed limiter is set to 205, and the Speedos tend to be optimistic above 150. If I want to really do 205, do I need to reset the limiter? In my car a GPS speed of 162 equals about 150 on the speedo. If the limiter user the same speed sensor, is it going to shut down at 185-190? I really want to break 200 at Mojave in a couple of weeks, should I have the tuner just boost the limiter to 250? Advice please.

Thanks,
Craig

 

[RALPHIE]

What tires are you running?

 

[tmcphail]

So, I know that the speed limiter is set to 205, and the Speedos tend to be optimistic above 150. If I want to really do 205, do I need to reset the limiter? In my car a GPS speed of 162 equals about 150 on the speedo. If the limiter user the same speed sensor, is it going to shut down at 185-190? I really want to break 200 at Mojave in a couple of weeks, should I have the tuner just boost the limiter to 250? Advice please.

Thanks,
Craig

If you are using a different tire email me the Tire revolutions per mile and I can correct the speedo. The on point for the Rev limiter is set to 250 on the files calibrations I sent you.

 

[Fubar]

I GPS'd my GT with the Bridgestones and found it to be accurate to within +/- 2 mph @ 100mph and almost dead on @ 150mph. I was to chicken**** to take my eyes off the road above that.

 

[FlagstaffGT]

Good points presented! I've searched for, but have not found, what the Ford pulley and tune top speed is set at. Does anyone know?
Can we just disconnect or pull the fuse powering the speed sensor sending assembly? And where would it be?