tire size correction question

[BigSur]

Originally Posted by shotgun

If you tell PHP your tire size (new) and your gear ratio (stock), I'm pretty sure Bill will program your custom tunes with those values and you will not have to change anything. Not sure about the canned tunes.

Even if it does slip through the crack, these values can easily be changed (in the stock, canned and custom tunes) using the Custom Options menu (http://forum.gopowerhungry.com/faqs-...ions-menu.html).

Even if your odometer is dead nuts (as I said above), your speedometer will still read high. And unless yours is better than mine, your fuel ecomony gauge (MPG) will never be accurate, or even consistently inaccurate. On average mine is .61 MPG high and has been as much as 2.21 high.

Hope this helps.

Thanks, this does help some. I just want to be sure. The Q&A link indicated that placeholder values will go in for TS as soon as I open the Custom Options Menu. I'll have to do some research to figure out how to calculate my actual revs per mile.

Thanks again.

[shotgun]

Originally Posted by BigSur

Thanks, this does help some. I just want to be sure. The Q&A link indicated that placeholder values will go in for TS as soon as I open the Custom Options Menu. I'll have to do some research to figure out how to calculate my actual revs per mile.

Thanks again.

You're welcome!

I created an Excel spreadsheet that will calculate REVS/MILE or circumference. A link is in this post: http://forum.gopowerhungry.com/gryph...html#post34767

In case you have other questions, the entire thread is here: http://forum.gopowerhungry.com/gryph...tire-size.html