I've seen heaps of these walbro fuel pumps on ebay for sale - are they legitimate items as they seem fairly cheap at £90 ...I'm looking to upgrade mine very soon so would these ones off ebay be worth getting? I'm not looking to run any more than 350-400bhp really (thats including n20 at 50bhp)
one walbro is good for abour 450hp with no loss of fuel pressure at high power. If you're after 600hp, I would go with a couple of pumps, either walbro or Bosch. There are some good bosch pumps that cost less than a walbro.