Quote:
Originally Posted by doughboy
it will only reduce oil at the inlet tract and manifold as this "short cut" off-boost oil vapour path is unavoidable.
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You're right doughboy, which is why the people I got my OCC from in the US make a double catch can set up for boosted engines, so they intercept oil in both paths - see 7th question on this page:
http://www.saikoumichi.com/faqs_page.html