Brain dead - appreciate help

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06-09-2015, 02:18 PM

KYWes

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Location: Louisville, KY

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Brain dead - appreciate help

Ok, so I got a new PCMFORLESS tune today that is programmed for the rear end I am getting which is to have a 3.73 gear ratio. I currently have the stock 3.42 ratio. Will my speedometer read too fast or too slow?

06-09-2015, 03:21 PM

Injuneer

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Re: Brain dead - appreciate help

It's going to read 8.3% lower than actual speed. At a true 60 MPH your speedo will be showing 55 MPH.

06-09-2015, 03:36 PM

KYWes

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Location: Louisville, KY

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Re: Brain dead - appreciate help

Thanks, that's probably not a bad thing. LOL

Quote:

Originally Posted by Injuneer

It's going to read 8.3% lower than actual speed. At a true 60 MPH your speedo will be showing 55 MPH.

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