scanguage 2 question

hi

i've been thinking about one and was wondering about the vehicle speed function and does it go off the speedo in the truck or does it go off of itself

e.i. if the speedo in the truck was off from larger tires will the scangauge also be off

 

It gets the signal from the computer, so I think it would be off if the tires are a different size.

GA

it actually reads more accurate than the speedo

 

it reads the info from the computer, but you can input a percentage into the SG2 for your larger tires. It will then display the correct speed on the unit(not the factory speedo though, it'll still be off) and the trip functions on it will give you an accurate distance traveled as well.

 

Well I just installed the scangauge II today and its reading within 1-2mph off my speedo. according to my gps if im doing 65mph, my scangauge is reading 59, and my speedo is reading 60.

 

what is the percent you enter the percent larger height of the tire

 

ahh man i had a big misunderstanding on this i was about to order one i thought it would read ur correct spped on ur speedometer. what do i need for that because i don't want to be racking on extra miles with diffrent tires.

 

the stock tires are 30.5", and say you are running 33's, the you'd take 33/30.5= 1.08 which means you'd want to bump the reading by 8%.

How would you be racking up extra miles on the odo? If you run larger tires, you'll travel slightly farther than the odometer would tell you so you'd actually get more warranty.

 

thanks

 

oh my bad i had it backwards it would just be nice if it corrected the speedo as well

 

yea that would be nice

 

Changing the speedo on the dash and/or the data in the computer would require a change of whatever 'mechanicals' that reads the data and inputs it into the computer.

For example - in Jeep Wranglers.... there's a gear inside the transfer case that is removable. Depending on your tire size & gears (in the diff), you need a different teeth count to make the speedo read correctly. The Jeep dealerships actually sell the different gears to install to correct the speedo.

I have no idea how Toyota's work. Do some research...maybe someone has some ideas on how to mechanically change the input to the computer. Or maybe it can't be done at all. That's where the Scangauge comes in.....it's probably the best bet aside from buying an expensive programmer.