can someone tell me where I can find info on this? i have no clue what it does, but im wondering why everyone has them in their "top vent" ....thanks!

 

Injuneers website has the best info on it. Print it and study it. It's that awesome. I cant speak for everyone but mine is in the vent because it's the best location plain and simple and also because I use it ALOT. I'm always monitoring it etc. I dont know how I ever drove a car without it.

 

thanks!!

 

http://members.aol.com/InjuneerZZ/ScanMast.htm