Intersting catastrofic failure is bad.

Now you are making me nervous
My buddy ran it for a few years and never had any problems said it was great. It increased his gas millage and made it feel slightly more powerful on the hill climbs. The kit reads boost and moderates propane volume by boost pressure. You can set at what point or boost pressure to have it start bleeding in and then for the next 20 psi it increases exponentially to wide open. I was thinking of having it crack open at 2-3psi so this way I can get the fuel millage advantages.
Has anyone else out there experience bad things with propane?
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2003 4x4 F350 Super Duty Crew Cab Short Bed
4" Down pipe and exhaust, Wicked Wheel, Modified Exhaust Turbo Housing, Big Head Waste Gate Actuator, PML Transmission Pan, Factory Tech Valve Body, Autometer Gage Pod, PHP FU2 Chip