I have a few questions as I'm seriously considering it for MPG benefits...

What size tanks do you have? I was thinking of a standard BBQ tank and fabbing up some brackets to mount it in that space outside of the frame in front of the rear tire by the fuel filler neck. That way I can remove the tank when getting it refilled. (in order to avoid road tax, hey it's for my BBQ!) But I'm wondering how long the standard BBQ tank will last running 1-2 psi of propane.

With a Hobbs switch set to come on at 2 or 3 psi of boost is it safe to run in city driving?

If I don't have an intake with tapped openings, where can I put the Hobbs switch for boost pressure?

 

Another way to spend your time not driving, which will save you fuel money. Just cause it adds power doesn't mean fuel economy saving of any measurable amount. I have good deal on fuel density streaming magnets to move your excess money into my money pit. Ha