Speedometer recalibration

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Feb 14, 2016 | 02:50 PM

2002exPSD

Thread Starter

Laughing Gas

Joined: Nov 2008

Posts: 871

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From: Kenner LA

Speedometer recalibration

Since I'm upgrading to 35" bfg km2's how do I go about recalibrating the speedometer? Can it only be done with a programmer? The edge that fried my pcm, bcm, column key sensor, and pats module is somewhere in storage, too scared to use it again.

Feb 14, 2016 | 07:41 PM

Curt's05

Wiser by FTE

Joined: Jan 2010

Posts: 2,837

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I did mine with a this programmer

Amazon.com: SCT 3000 X3 Power Flash Tuner: Automotive

, its expensive but very nice for loading tunes into your ex!

Feb 14, 2016 | 07:45 PM

Toreador_Diesel

FTE Leadership Emeritus

Joined: Sep 2003

Posts: 12,253

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From: Houston, Texas

Someone with an AE can easily do it, ask me how I know...

Feb 14, 2016 | 08:43 PM

2002exPSD

Thread Starter

Laughing Gas

Joined: Nov 2008

Posts: 871

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From: Kenner LA

Quote:

Originally Posted by Toreador_Diesel

Someone with an AE can easily do it, ask me how I know...

Can it be done with a genisys evo? I have that.

My cousin has a autel maxisys

Feb 16, 2016 | 08:19 AM

Toreador_Diesel

FTE Leadership Emeritus

Joined: Sep 2003

Posts: 12,253

Likes: 763

From: Houston, Texas

Quote:

Originally Posted by 2002exPSD

Can it be done with a genisys evo? I have that.

My cousin has a autel maxisys

I'm not familiar with either tool, but you'll know it when you see it.

Feb 16, 2016 | 09:53 AM

Krazee Matt

Logistics Pro

Joined: Jan 2014

Posts: 3,595

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The Autel MaxiSys should have the capabilities to change it. Whether it wants tire size OR revolutions per mile I don't know, but that's easy enough to find out. Calculating revs/mile, Diameter x pi to find circumference. Then 63,360 / circumference to find revolutions per mile.