Speedometer calibration - now what...

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Dec 14, 2010 | 10:14 PM

jpcjguy

Thread Starter

Tuned

Joined: Oct 2009

Posts: 270

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Speedometer calibration - now what...

Hey all,

So I am now running with 315s and have the instructions to change the revloutions per mile in the computer - just need someone to do it.
2 dealers won't touch it, one wants $120 to do it. That seems to be a rip off based on what I have read...
Anyone in the Richmond, VA area that knows of someone who can/will change it? For a reasonable amount? Don't really want to buy a programmer as I am running a DP Tuner...

Thanks
Joe

Dec 15, 2010 | 02:11 AM

Stewart_H

Super Moderator

Joined: May 2004

Posts: 29,380

Likes: 118

From: Central Coast of CA

You can always opt to buy AutoEnginuity and do it yourself!

Then you'd also have one of the best scan tools money can buy!

Stewart

Dec 15, 2010 | 10:35 AM

myblkex

Senior User

Joined: Feb 2009

Posts: 415

Likes: 1

From: Long Island - NY

as per Mike from 5 star when I spoke to him last regarding this same issue -- The tuner will only compesate to correct the shift patterns etc.. for the new tire size - it will not adjust , nor correct the speedometer by more than IIRC by 4-5%. I adjusted my wheel size using my SCT tuner to the new tire size (315 - 35" tire ) and the GPS still shows the speed to be off by about 10% ( real speed vs. speedometer reading ). The only way to really get it to be correct is to buy a deivce especially designed for speed calibration or perhaps there is some other programmer the dealer may have that can compensate and not throw off any other settings...

Hope this helps

Dec 16, 2010 | 12:23 PM

RACERX7775

Postmaster

Joined: Oct 2005

Posts: 3,620

Likes: 3

From: WARRINGTON, PA

I have a snap on VERUS scanner and that one wont let me do anything with speedo adjustments on my 01. And the scanner was almost $8000.

Dec 16, 2010 | 02:41 PM

RMBC Freeride

More Turbo

Joined: Oct 2008

Posts: 657

Likes: 4

From: Pueblo, CO

The speedo adjustments are handled by the ABS computer. I know AE can do it, because we did my truck.

RACERX, try looking on the VERUS under the ABS settings.