xr4x4rs

iTrader: (5)

just want to make sure i have pipe it up correct

w on amal valve goes to actuator

c on amal valve goes to compressor housing

and the other just goes to atmosphere

is this correct

reson i ask is im only running 15psi and the actutaor has about an inch thread left on t and need to turn it up to 21psi

JTECH James

iTrader: (13)

correct mate

JTECH James

iTrader: (13)

you may need to take the restrictor out of the atmosphere port to get the boost up to the level you want, screw a self tapper in by hand and pull it out whjy arnt you using the amal anyway? they are there for a reason!

or just shorten the arm a turn or two

xr4x4rs

iTrader: (5)

i am using the amal valve

but the last one originally went to the air filter doesnt it? or does it goe inlet manifold

either way ive always ran it it to atmosphere bar w and c

xr4x4rs

iTrader: (5)

it does have a a plastic valve in there

so should i remove this

JTECH James

iTrader: (13)

if you cant get the boost up to the level YOU want it to be, then remove it, and the boost will raise easily, its normally hard to get 26psi with this in place. as the valve cant get rid of enough air to atmosphere ,so the wastegate ends up seeing enough pressure to open

JTECH James

iTrader: (13)

one of the other two ports, the wastegate one it think should also have a restrictor, do not remove this one

JTECH James

iTrader: (13)

heres a thread i wrote on the bb a while ago, makes it fairly simple i think as to how they work,

Amal valve,or boost control solenoid as its sometimes called, this is how the ecu controls the amount of boost the turbo makes ,like an elactronic bleed valve in effect.

it also allows the boost to have a peak and hold figure, as the boost will spike when the valve is opening, then return to its hold figure when it closes off at the top of the boost range.

some people do away with them and just fit a bleed valve in between, but then you can only run the hold figure of boost and not have a nice spike to give a tad more torque where its needed

the amal valve basicly stops the wastegate actuator seeing the full amount of boost pressure coming from the compressor housing ,it does this by opening and closing a electronic valve, which bleeds some of the boosted air to atmosphere



take this example ,your wastegate actuator is set with a small pre load, and will open at 15psi.

the turbo is making 15 psi, so the wastegate should open preventing the turbo from making any more boost, BUT the amal valve is opening and closing very quickly allowing 5 psi to escape to atmosphere, all of a sudden your turbo is making 20psi before the wastegate actuator can see the 15psi it opens at. HERE IS YOUR PEAK FIGURE,

Then as the rpm climbs ,the ecu tells the to valve stop opening and it stays closed, the wastegate actuator can now see the full amount of boost made by the turbo and only allows 15psi before it opens the wastegate to prevent any more, HERE IS THE HOLD FIGURE.

there are variations to how the amal valve is mapped,and the restrictor ports sizes can also effect how much air is allowed to bleed off to atmosphere, also the turbo size/spec will also make a big difference how it makes and holds its boost, so it may affect boost differently, but for the purpose of explaining how they work this is fine.
__________________

xr4x4rs

iTrader: (5)

JTECHSAFF

nice one mate

thanks

i took the restrictor out as you said and im seeing around 20psi

so still have some more on the actuator to adjust to get the boost i want even though its 1 or 2 psi