How much additional flow will I get with a shower power booster?

There are flow charts and detailed information on the www.showerpowerbooster.co.uk web site. Visit our site to buy the latest version of this pump.

[@michaelelliott5548]

I've actually fitted one of these shower boosters money worth spent and it does exactly what it says on the box it's so easy to fit also it does not sound like a jet plane taking off and another thing people it's made in England happy days