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I bought a new 300zx and just did a boost leak test and the flange off the after market bovs are leaking

they are on the intercooler pipes beside the tb pipes

I replaced them with the orginal pipes but iam wondering if i replaced the vacuum hoses properly

Should the drivers side run from the nipple on the intercooler pipe to the driverside of balance tube?

Should the pass side run to the plenum?

The intercooler hose was just cut and not capped either side

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So let's get this straight? You've got aftermarket bovs on the intercooler pipes up top between the rad and the plenum. The original recirc should have had it's two feeds capped or plugged, have you got open holes?

  • Author

Yea the bovs were on the pipes going to the throttle bodies

there was a vacuum feed going from the balance tube (drivers side) to 1 bov

And on the passenger side the feed was coming from the passenger side of the plenum

There is uncapped cut hoses under the other two pipes

i replaced the bovs with the standard pipes

I want to make sure the vacuum hoses are right

should i just join the hose back up either side to where they are cut under the pipes?

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