Scan gauge....

What does it do? Just curious, I see more and more people getting them but I am just not sure what they do?

 

http://www.scangauge.com/

I plan on getting one eventually too...

 

It basically reads the vehicle's sensors through the OBDII port. So you can view your coolant temp, air intake temp, rpm's, mpg, etc. It will also read and clear CEL codes.

 

I installed on on my 02 Prerunner 3.4
We watch it all the time, and our average gas mileage increased 14%
At $2.50/gal we should save over $300/year on gas.

It also gives instant mpg, trip mpg, tank mpg. Volts, temp, gph, and lots more. It will also read codes.

 

^^^^^^^^^^^^^
What they said, check out http://www.tacomaworld.com/forum/group-buys/16601-scangauge2-group-buy.html If you PM him, he has been known to honor the price for TW members.