2008 Subaru Outback H6 LL Bean Edition
My 2008 H6 seems to have a low rpm rattle from the inside of one of the front catalytic converters. I have tightly applied 6 hose clamps to the heat shielding which stopped 90% of it but there is still noise at 1200 rpm. There is no cel code so presumably the cats are still working. Any ideas for a fix? Also are the exhausts different between 2007 and 2008 H6's? I found magnaflow cats with integrated headers, stainless steel, which appear to be mandrel bent online for about $600, but they only show fitment for 2005-2007 3.0 H6. I suspect those may provide a performance benefit, but not sure how much as they are still 2.25 in diameter.