Overboost issue post Dawes Valve and catch can fitment.

[mudski]

I see what they have done..
Clever..
So yea it's sorta a 2 port valve with inbuilt T..
So the HPD setup is similar again just bigger..
Anyway..
Still need a needle valve..
@mudski what is the quality of the needle valve you have on ebay?
I'm finding the width on my chisel mark is making a difference but then the locking nut affects it too..

Thats the biggest issue with those valves they supply....
The needle valve I sell are Italian made, from Tognella. Top quality, but also with a top price. But you get what you pay for. They sell for $80 plus post a piece, with two 1/8 inch barb fittings. Your price would be $65...

This is my Dawes valve as sent by Darren Dawes [USA].
he supplied an extra TEE, very grateful lol
@wranga be careful if you need to stretch the spring as its hard to "un-stretch"
them, you can get a stronger spring from some sellers, lol

You dont need to stretch the spring, anymore. That was an old design which was superseded to a smaller unit with a stronger spring around 3 years ago. And I sell the springs if needed....