Electric fuel pump is absolutely necessary for the Weber. I would use a Carbole 42S fuel pump off ebay (this is a high volume/low pressure pump - Weber's require flow not pressure to function properly) Same as the Mr Gasket 42S (identical down to the part number) but about 1/3 the price. Easy to set up and if you're not electrically savvy you can buy an inline relay accessory kit to run it to save you the headache of building a relay harness with a fuse.