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xjohnx I am sure you can figure out an easy DIY way to do this but.. This is where I would start..
http://www.turboboostleaktesters.com...101/Categories
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ntaphse That is definitely one way to do it... But I remember while back someone pointing out a bolt that is in the back of the manifold that can be taken out and replaced with a nipple. This would be the easiest solution.