D djdanny5000 Member Contributor : 2007 Mazdaspeed 6 GT Retired: 2002 Protege 5 Aug 29, 2009 #1 I was just wondering if anyone has Port N Polished there intake manifold on the speed 6 or 3 and what kind of gains you noticed from it
I was just wondering if anyone has Port N Polished there intake manifold on the speed 6 or 3 and what kind of gains you noticed from it