I'm trying to squeeze the most mpg out of my Xb. One of the items I purchased requires that I attatch it to the fuel line "In". With all the lines that run along the firewall I have not been able to locate the main fuel line going to the throttle body. Any help would be greatly appreciated.

Thanks
anoninfo

the fuel line does not go to the throtle body...
it goes to the fuel rail (on top of the injectors)

there is a metal line that runs from the injector rail toward the driver side of the engine.
it turns and goes back toward the firewall.
there it meets a flexable hose that does a 360 (it says fuel line on it) and connects to another hard fuel line on the firewall.

i hope you did not buy the magnet on fuel line thing....complete snake oil...