that being the case. (the way you have the lines routed) the compressed air is going to the solenoid, but the solenoid doesnt know that the bottom of the wg isnt being fed, so you get a huge spike until the pressure in the exhuast manifold is enough to open the valve in the WG. ( even when this spike occurs, you still dont know if the solenoid is even allowing any air to travel to the bottom port on the wg)


in my opinion, you need to hook that controller up to the top of the wg, leave the bottom port hooked to the compressor housing (it will open normal at this point) the point of the boost controller is to allow you to apply pressure to the top of the wastegate to achieve your desired boost level.

by only using the bottom port, i can see how it would cause huge spikes.........as its never working properly

 

i was under the impression that the top port was only to be used with an electric boost controller.

i'll give it a try though. just got to find a fitting to put on the top port. :D so would i "T" into the source line or what? since you said to leave it connected.

 

wouldnt the bottom port on wg connect to the compressor housing nipple?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaveF &raquo;</TD></TR><TR><TD CLASS="quote">that being the case. (the way you have the lines routed) the compressed air is going to the solenoid, but the solenoid doesnt know that the bottom of the wg isnt being fed, so you get a huge spike until the pressure in the exhuast manifold is enough to open the valve in the WG. ( even when this spike occurs, you still dont know if the solenoid is even allowing any air to travel to the bottom port on the wg)


in my opinion, you need to hook that controller up to the top of the wg, leave the bottom port hooked to the compressor housing (it will open normal at this point) the point of the boost controller is to allow you to apply pressure to the top of the wastegate to achieve your desired boost level.

by only using the bottom port, i can see how it would cause huge spikes.........as its never working properly </TD></TR></TABLE>

it doesnt work that way on these manual controllers.

 

thought so. was kinda getting confused.

 

im still confused because this is what i found on boostcontroller.com website about MBC's.
http://www.boostcontroller.com...?i=21

"One hose is installed at a location that provides an accurate boost source. The location that provides an accurate boost source could be any number of places… a nipple on the compressor housing of the turbo, or another place in the intake system between the turbo and the intake manifold "
"The other hose is installed at the Wastegate Actuator"

anyone??????

 

what are you confused about? i told you how to hook it up in your thread. if you search, there is a diagram someone made of the exact same boost controller you have.

connect a single vacuum hose from the compressor housing nipple on the turbo to the bottom port on the wastegate. then, cut the hose in half and correctly place your "T" in between. now connect another single hose from the 3rd nipple on the "T" to the corresponding nipple on the boost controller. leave the other open to atmosphere and adjust accordingly.

now let's try and keep this on topic with my problem.

i tried backing out the coarse adjustment all the way and see if it made a difference, nope. so my next step is to find a known good gate and swap them out to see if that is my problem. i'll report back in a bit.

but what i don't get is, i am currently using the box "T" and it's working up to 10psi with the slight fluctuation. so it was able to raise the boost 3psi over the spring rating. so i'm thinking it can't possibly be my gate if i'm able to increase those 3lbs.

another thought that crossed my head is, maybe i got the wrong boost controller for my goals? maybe i should have gone with the regular dual stage instead of the high performance dual stage? or is the only difference between the two, the coarse adjustment? just throwing things up in the air right now. this is so frustrating.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">

it doesnt work that way on these manual controllers.</TD></TR></TABLE>

explain it for us all please....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaveF &raquo;</TD></TR><TR><TD CLASS="quote">

explain it for us all please.... </TD></TR></TABLE>

these controllers dont have a solenoid, they are basically a manual boost controller that gets t'd into the bottom port and they controll boost by holding the pressure untill it reaches what you set it at, there is no compressed air or anything to apply to the top of the wastegate like a boost solenoid, the only electronic part of the controller is to switch to the 2nd setting which is manual as well

i used one of the controllers yesterday t'd into the bottom port when i couldnt get my mac solenoid to function properly

the only other advice i can give you is to check the coarse adjustment, my friend had a problem with it skyrocketing up and it was because he had the coarse adjustment turned the wrong way

 

i still dont see why you cant use it on top of the wastegate, all you are doing is applying your desired pressure, VIA your air pressure regulator. this will give you your desired boost level. you can use the intake manifold as the pressure source. there is no way you are hooking this thing to the top and not seeing results, you apply 10 psi of pressure, onto the top of the wg and you should see more than 10 psi in the intake manifold.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EARLdaSQUIRREL &raquo;</TD></TR><TR><TD CLASS="quote">
i used one of the controllers yesterday t'd into the bottom port when i couldnt get my mac solenoid to function properly
</TD></TR></TABLE>

you used the turboxs controller? how did it work out for you?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
the only other advice i can give you is to check the coarse adjustment, my friend had a problem with it skyrocketing up and it was because he had the coarse adjustment turned the wrong way
</TD></TR></TABLE>

i've tried it turned all the way in, all the way out, turned it just enough for the rattle to stop, and all have ended with the same result. maybe you can ask your friend what exactly he did to solve his problem?