Vacuum Diagrams

[Guest]

I'm after info and diagrams on the vacuum lines.

Specificly the little red-brown with black thing on the end of it and two nipples for lines that is on the very top of the bracket behind the filter box... has a plug on the top of it too.

The way its set up at the moment has a line to the manifold on the horizontal nipple and is sucking air in the other one. What does this thing do/ment to do.

Its the one in the top right corner (only half of it is showing) of the pic in this post. http://www.clubsub.org.nz/forum/index.php?topic=757.0

[THUNDA]

pretty sure thats a sensor which makes your boost cut once it reaches a certain point (ie 16psi) unplug this and you will have no boost cut (rangi mod which is bad for your car but it does work) my mate has a legacy gt wagon and he runs 16psi strong without an aftermarket boost controller, he just pulled off some pipe and unplugged the senser and now the car doesnt have a boost cut.

**I WOULD NOT RECCOMEND DOING THIS**

[Guest]

top one map sensor? takes presure reading off the manifold?

cylinder one is boost control solinode??

dont have any info on it though, there is two types of boost control solinoids, 2 hose and 3 hose, not sure how the 3 hose works though.

dont quote me on any of this though

-smurff

[Guest boostcut]

yeah either map sensor or some kind of vacuum switching valve....

[Swindog]

 THUNDA said:

pretty sure thats a sensor which makes your boost cut once it reaches a certain point (ie 16psi) unplug this and you will have no boost cut (rangi mod which is bad for your car but it does work) my mate has a legacy gt wagon and he runs 16psi strong without an aftermarket boost controller, he just pulled off some pipe and unplugged the senser and now the car doesnt have a boost cut.

**I WOULD NOT RECCOMEND DOING THIS**

Look back tonight and ill hook you up.

I have all the sensor and line diagrams at home. Actually or look up turbosmart wastegate manual as i think they have them in the back.

[THUNDA]

Aye? I don't want anything aye. cheers though

[Guest keltik]

Pretty sure the black square one under it is the MAP sensor.. I never figured out what mine did either but it was one transplanted from a WRX so they definately have them too

Unplug it and see what code it throws?

[Swindog]

 THUNDA said:

Aye? I don't want anything aye. cheers though

not you.

http://www.mediafire.com/?mlxmymmz4mz

Download. Scroll to the end of the document, there you find locations of solenoids and components.

Or right click on the images and save as.

[Stoffa]

pressure exchange solenoid, on my V5 one end connects to vaccuum source (inlet manifold) the other to the MAP (Manifold Absolute Pressure) sensor.

If its not connected your ECU wont know how much boost your engine is running (this is bad)

I'm assuming the ECU adjusts your fuel and/or timing according to how much boost your MAP sensor runs. hopefully some technical guru can confirm this.

Mine got blown off and I'm sure its part of the reason I ran a bearing, I was hitting 17psi and ECU thought I didn't have any boost, causing it to lean out.

[Swindog]

 Stoffa said:

pressure exchange solenoid, on my V5 one end connects to vaccuum source (inlet manifold) the other to the MAP (Manifold Absolute Pressure) sensor.

If its not connected your ECU wont know how much boost your engine is running (this is bad)

I'm assuming the ECU adjusts your fuel and/or timing according to how much boost your MAP sensor runs. hopefully some technical guru can confirm this.

Mine got blown off and I'm sure its part of the reason I ran a bearing, I was hitting 17psi and ECU thought I didn't have any boost, causing it to lean out.

Thatll do it.