I like putting a kill switch in the fuel pump wire coming off the resistor. that way the truck will start and fail repeatedly as if it was just a piece of crap truck rather than failing to do anything and get the guy looking for a kill switch.
Saw 4.05 when I didn't need gas. Paid 4.29 when I did need gas, and then 419 on the very next exit. probably won't need more until Ohio so we'll see what they have.