Posted 18 September 2008 - 05:29 PM
According to Mr Vizzard, Webers can deliver up to 10% power increase, mainly at the top end. He says that on engines built up to a spec delivering 70+HP then a Weber is suited for the job. The 40 is better for tuned 998-1275 whereas the 45 is suited for the 'fire-breathing 1380's'. The O/H has stolen the book off me at the moment, so I can't quote directly, but I have said what I can remember. Also, Webers cause mini's to sound rather sweet! You will need to get your mini rolling roaded no matter what upgrade you go for, to ensure all is well, and Webers are no different.
I have been told that once a Weber has been set up, then it tends to stay that way, just the initial set up can be a pain, but that is why rolling roads are so great!! Don't let the fact I am selling mine put you off what I am selling, I am merely quoting Vizzard. It would be worth you putting a new head, cam and stage 1 kit on before you even consider a Weber, but if you want something a bit different then I would say that it would be a great addition to your engine bay, if your willing to learn about them and get the car set up.