Speedometer Calibration Q - TDR Roundtable

Speedometer Calibration Q

09-28-2006, 01:36 AM

#1 (permalink)

MFortie

Non Member

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Join Date: Dec 2005 Posts: 10

Speedometer Calibration Q

Hi All,

Just had Toyo 35" M/Ts installed on my 4.5 3500 4x4 and am wondering about recalibrating the speedo.

Is this an ECM only recal or the old-school-change-the-gear-in-the-trans recal? (It's an auto trans if it makes a diff.)

So far I like the tires; I noticed a little loss in mileage and off the line torque, but I have 4.10 gears so I don't think it's that big of a deal. I have no plans to reprogram my ECM as I'm happy with the stock performance so I'm hoping I don't need a programmer to redo the speedo.

A Lorenz suspension kit is in the works soon and I only get a very slight bit of rubbing with the Toyos on the stock rims.

Thanks,

Mark

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