Boost Gauge Install

[Jact]

Hi guys,

I've done some searching but surprisingly little comes up about the specifics of this.

Where exactly have people connected their T-Piece for a mechanical boost gauge on a XR6T?

I fitted mine to the manifold end of the blow-off-valve but it doesn't seem to give any pressure.

https://itbtra.bay.livefilestore.com/y1p_V33iy1GPjfvfuRelTo9wEx8T0aWr89NhTG92tgdd8o_eBDckqvBP2V4K8Y2bcZjpMCmXn2Rw-Y/DSC_0710.jpg

[Bellato]

Pic doesn't work.

Not sure if mechanical is the same as electric but on my electric I T'd into the vacuum line coming off the BOV and it worked fine.

Are you getting any readings at all or is the gauge stuck on zero the whole time, could be that the wiring isn't right too?

[Paulie2256]

There is heaps of info about this.

http://www.fordxr6turbo.com/forum/topic/69592-gauge-wiring-problem/

http://www.fordxr6turbo.com/forum/topic/67648-cheap-and-easy-gauge-installation/

http://www.fordxr6turbo.com/forum/topic/42945-tripod-gauges-fitted/

http://www.fordxr6turbo.com/forum/topic/74721-vacuum-at-idle/

Edited 12/02/13 10:33 PM by Paulie2256

[Jact]

Pic doesn't work.

Not sure if mechanical is the same as electric but on my electric I T'd into the vacuum line coming off the BOV and it worked fine.

Are you getting any readings at all or is the gauge stuck on zero the whole time, could be that the wiring isn't right too?

Ok hopefully you can see the pic now?

That does sound like the same place I have my T piece, but the gauge just sites on 0 psi, it doesn't move at all when I turn on the car or rev it.

There is heaps of info about this.

http://www.fordxr6turbo.com/forum/topic/69592-gauge-wiring-problem/

http://www.fordxr6turbo.com/forum/topic/67648-cheap-and-easy-gauge-installation/

http://www.fordxr6turbo.com/forum/topic/42945-tripod-gauges-fitted/

http://www.fordxr6turbo.com/forum/topic/74721-vacuum-at-idle/

Thanks for the links Paulie, it sound like others have put the T-piece coming off the BOV to.

Hmmm maybe my new gauge is dead...

Edited 13/02/13 06:32 AM by Jact

[stroller]

have you tried driving it? my boost gauge doesnt read above zero if im just sitting there revving it.

[Jact]

Ok so the install pic above is correct guys it was the boost gauge causing the problem. The needle was stuck against the glass and not moving.

Now when I turn the car on the gauge instantly jumps down to about negative 40~50 psi and driving around I can get it up to about positive 10~12 psi.

Surprisingly to me the boost doesn't begin to come on until about 60% throttle, no matter what RPM its doing!

Maybe this is a dumb question but isn't the boost from the turbo proportional to the engine RPM not the throttle position?

[stroller]

yes it is, should come on around 2000

[RAP1D]

Ok so the install pic above is correct guys it was the boost gauge causing the problem. The needle was stuck against the glass and not moving.

Now when I turn the car on the gauge instantly jumps down to about negative 40~50 psi and driving around I can get it up to about positive 10~12 psi.

Surprisingly to me the boost doesn't begin to come on until about 60% throttle, no matter what RPM its doing!

Maybe this is a dumb question but isn't the boost from the turbo proportional to the engine RPM not the throttle position?

Has the car been tuned? Those areas can be altered to bring boost on at earlier tps, that's a nice thing to do a conservative low boost tune, itll make it feel pretty quick

[Jact]

yes it is, should come on around 2000

Driving around I've noticed the boost doesn't fully come on until about 3500 RPM

Has the car been tuned? Those areas can be altered to bring boost on at earlier tps, that's a nice thing to do a conservative low boost tune, itll make it feel pretty quick

Yeah it's been tuned (so Ford tell me) and the boost gauge is hitting about 12psi. It really doesn't feel that quick but I think that's for another topic...