mark2

hi
if an amal valve on a series 2 was faulty could it cause the car to lose boost
the amal clicks on the turn of the key and when disconnected boost stays at 7 psi
but when connected boost rises to 12 psi then falls to 7 psi the car is set to run 12 psi
hope someone can help
mark2

tabetha

Unlikley to be the valve as it sounds as though it is working, it only follows instructions from ecu.
tabetha

mark2

so is it possible that the pulse from ecu is braking down and sending wrong pulses to amal which could in turn make the boost drop
i did remove the amal and tried an adjustable boost valve and got stable/holding boost from 7psi fully closed on valve and driving lovely .
upto 9psi with only a 1 1/4 turn on the manual controller but to laggy for me but holds boost
so am i right in saying with the amal connected the actuator rod is say set to 6/7 psi and the bleed off from amal makes it rise to the 12psi but as there is somethink wrong there is boost drop
so if i remove amal valve and have bleed valve in its place fully closed and 7psi and say take the boost up by the ac/rod to say 11 psi am i right it still will be laggy even thou bleed valve closed at the moment as i only found it laggy when adjusting the bleed valve
mark

mark2

cracked it i now have stable boost
removed amal valve and now have constant pull with no spiking ok i used a 3 port bleed valve untill i get an electronic boost controller
can anyone recommend one that works well on erst mfi
cheers
mark2