Just pull the fuel pump fuse - the engine will not start up as the fuel pressure drops over a couple of hours. That's why you hear the fuel pump run when the ignition is first switched on from an overnight stop. Try it - it will take a minute to prove.......
If you are determined to go down this road, you could easily wire the fuel pump to an isolation switch on the console for cold starts.
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2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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