Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

Have 3.73s, speedo and odo are off by ~15%

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Old Mar 13, 2006 | 09:24 AM
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Question Have 3.73s, speedo and odo are off by ~15%

I have a 93 Firehawk with 3.73s installed.
I'm told that I can't adjust the PCM to reflect my gear change, but I remember that someone used to make a little box that fixed that me.

Anyone know where I can get that device?
Old Mar 13, 2006 | 12:26 PM
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Re: Have 3.73s, speedo and odo are off by ~15%

www.dakotadigital.com

I believe it's this unit, but I'd give them a call to make sure.
Old Mar 13, 2006 | 01:31 PM
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Re: Have 3.73s, speedo and odo are off by ~15%

I saw that one on at least two websites this morning.
It's a little more versitile than I needed, but it should do the trick.

I guess SLP doesn't make the little box anymore.
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