Originally Posted by
RSargie
on the subject, has anyone treid one of thease yet?
http://cgi.ebay.co.uk/Manual-Boost-C...item518da6b3dd
they are ball and spring type, like a dawes i belive, price looks good as well.
it says it dosent bleed, so no loss of metered air and just opens at set pressure?
they are fine if you want to just set a boost pressure at a certain level and leave it.
if you want a varying boost curve proper controller or mapped air injectors are needed.
my cos had 22 psi to 4700 rpm, 25 psi to 6300 rpm then 32 psi to 7800 rpm so as to prevent surge issues. air injectors were set in the map by msd.