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Posted: Tue Jul 22, 2008 2:46 am
by capriman86
funny you say that, i just checked mine out this past friday!
at 70mph mine seems to be going closer to 65/66
Posted: Tue Jul 22, 2008 3:57 am
by 86capriasc
so your speedo reads 65/66 yet you are going 70?
Posted: Tue Jul 22, 2008 10:53 pm
by capriman86
that is correct
Posted: Tue Jul 22, 2008 10:57 pm
by 86capriasc
I'm waiting for a call back from my local mustang speed shop to find out what gear will correct this. I'm thinking either a 20T or 19T. Iwould like to have it run a lttle faster than my actual speed. Maybe 3 mph faster like factory vehicles.
Posted: Wed Jul 23, 2008 10:05 pm
by 86capriasc
Ok, I went up and talked to Doug at peformance-plus.com today and he gave me a black 20 tooth gear(for free). He said each tooth up or down will change the speedo by 4-5 mph. I will get it installed soon, and test it against the GPS and let you know.
Mike
Posted: Wed Aug 06, 2008 2:38 am
by 86capriasc
Ok, so I finally got my 20 tooth gear in today. I checked it with the GPS and it is perfect at 60mph.
Mike
Posted: Thu Aug 07, 2008 10:44 pm
by capriman86
I think I put in the 19T right? LOL
Good to know, I will keep it in mind when I pull my tanny this winter!
Thanks