What does a dump valve do how much are they and do they make any difference?????????????

As far as Im aware they make no real perofrmance difference - just a nice woosh sound when boost is released to atmosphere. HKS are meant to be the best. I think they range from £250+

HKS are classed as the best, but for the money you cant go wrong with the Apexi Twin Chambers http://www.getgreddy.co.uk/shop/product_info.php?cPath=22&products_id=56

 

Or the GReddys if you fancy a bit of fabrication

What does a dump valve do how much are they and do they make any difference?????????????

 

 

When I increased the boost the original diaphrams leaked quite a lot as the pressure mounted, resulting in a huge amount of power lost as the revs increased. Changed them for a pair of pistons - superb!

What does a dump valve do how much are they and do they make any difference?????????????

 

 

I've heard that BAGGINS has a two-way dump valve that's very cheap! Ask Herman what sort of difference it's made for him!! :rofl: :nono: :mac1:

doesnt th z have recirculating valves, which are actually better performance wise than dump valves?

doesnt th z have recirculating valves, which are actually better performance wise than dump valves?

 

 

As standard, yes you're right they do come with re-circs. But the Max Power generation love the PTSHHHHTT noise! ;)