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random t/b vacuum port? rb20det


gibbon

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Hi guys, does anyone know if this port takes a reference from before or after the throttle plate?

 

r32vacport.bmp

 

Need a boost reference for my wastegate, want to take one after any pressure drop through the i/c, and I've been told I can't take one from the manifold itself as the vacuum will damage the diaphragm. I was going to just tap into my piping before the throttle body, but then I saw this little port and got to thinking....

 

Cheers in advance

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