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Forum: 4x4

02-14-2010, 03:24 PM

Replies: 51

Sticky: Speedo Correction for Larger Tires

Views: 47,425

Posted By Christopher Thwaites

Re: Speedo Correction for Larger Tires

Steve,
Before I corrected the speedo error I always drove with my GPS on and used it to check mileage. I also checked the speedo against the GPS after the new tune was set. Since I only have a 30...

Forum: 4x4

02-14-2010, 12:38 PM

Replies: 51

Sticky: Speedo Correction for Larger Tires

Views: 47,425

Posted By Christopher Thwaites

Re: Speedo Correction for Larger Tires

Herb,
My calcs are by hand. I don't have a scan guage. Yet......!
Also, SCT 5star creates custom tunes from a 3 page questionair completed by the customer. For the basic cost of about $375 you get...

Forum: 4x4

02-13-2010, 09:24 AM

Replies: 51

Sticky: Speedo Correction for Larger Tires

Views: 47,425

Posted By Christopher Thwaites

Re: Speedo Correction for Larger Tires

I ordered a tuner from 5Star and had it loaded with 3 programs. 87 0ctane, 87 Octane while towing, and 92 Octane. I'm half way through a 2500 mile trip and so far my avg. mpg has improved by 2 mpg....

Forum: 4x4

01-29-2009, 04:38 PM

Replies: 51

Sticky: Speedo Correction for Larger Tires

Views: 47,425

Posted By Christopher Thwaites

Re: Speedo Correction for Larger Tires

SCT Programmer????? Can I borrow it? I've been to 2 dealers with explicit reprogramming instructions along the same lines as already noted. $250 later I'm still off about 10% and the dealers think...

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