Did mine yesterday, I see why a few people had trouble.
Using the fel pro gasket you can't seat it by hand. You need to use the bolts and tighten side to side. Mine did seat flush/fully, I lubricated the o-ring and cleaned/lubed the intake plenum. Make sure the o ring is not twisted on the disa valve. It does go in hard, I could see an old/brittle disa valve cracking. It is def sealed however!
Has anyone tried the BMW o ring? I wonder if it is a better fit.
Last edited by wildcat293; 02-19-2012 at 11:21 AM.