Pressure source for external wastegate?
#1
Pressure source for external wastegate?
I'm trying to find the best pressure source for my Tial external wastegate. Form reading around some people like to come off the manifold to get the actual boost seen by the motor. Some say just to come from the compressor cover on the turbo. Tial's diagram shows the source before the throttle body, some people say after the throttle body is ok?
This is what I had planned to do along with a Greddy B Spec II.
1. From the manifold to the lower nipple of the wastegate.
2. Nipple on compressor cover to NC on boost controller solenoid.
3. Solenoid COM port to the top wastegate nipple.
Does it sound like a decent plan or should I change it up a little? What has worked for you?
This is what I had planned to do along with a Greddy B Spec II.
1. From the manifold to the lower nipple of the wastegate.
2. Nipple on compressor cover to NC on boost controller solenoid.
3. Solenoid COM port to the top wastegate nipple.
Does it sound like a decent plan or should I change it up a little? What has worked for you?
#2
rotorhead
iTrader: (3)
I would think it would open quicker if you hook the bottom nipple of the wastegate to the compressor housing, possibly preventing boost spikes. That's what I'm planning to do as of now, especially since I plan to run on wastegate pressure for a while until I'm confident of the basic tune.
Hopefully someone with firsthand experience can chime in.
Hopefully someone with firsthand experience can chime in.
#6
2 Rotors, 1 Turbo
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IIRC, Greddy wants you to get vacuum from the FPR for the boost pressure sensor input thing (on the back of the unit). I've got the stock turbo, and there was only one way for me to hook up the solenoid. There should be a pressure source coming from the turbine to the wastegate, and it's a rather large vacuum hose. I think it was NC and COM just like you described.
#7
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I think this may help.
http://www.greddy.com/img/PHP/products/pdf/689.pdf
and this
http://www.tialmedia.com/documents/w..._wginstall.pdf
http://www.greddy.com/img/PHP/products/pdf/689.pdf
and this
http://www.tialmedia.com/documents/w..._wginstall.pdf
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