Compression Ignition Addict
Join Date: Apr 2010
Location: San antonio TX
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I believe it changes the speedo on the truck as well, not that mine ever agrees with the readout on my blackmaxx. I forgot to mention that, I don't bother with the speedo on my truck as it seems to change slightly everytime I get in my truck, some times it reads slow sometimes it reads fast sometimes it dead on, where as the display on my black maxx always reads correctly.
I thought speedometers run off the rolling circumference of the tire, they ask for the height as its easier to determine and because the circumference can be calculated from the height.
Air pressure can effect things as well.
2008 (Job 1) F250 King ranch 4x4, snow plow prep package with 2.5 level. Black Maxx, B&W Diehard platinums. Dieselsite coolant and transmission filters, NCU Motorsports/amsoil oil bypass kit. Turbo blankets, 5.5 PMF traction
Please collect and message me Shell, Rotella oil cap codes aka "my miles matter"
I'm trying to save up for a hat or something.