Originally Posted by workingonit

Why remove the intake manifold just to repair/upgrade the DISA valve? Unless you suspect it has already broken apart inside, but then it's probably too late...parts may already have been sucked into the valves. But, it may make inspection/repair of the CCV underneath easier, if you want to do that.

I just did the GAS DISA upgrade, and though I was wary of the infamous steel pin falling out of the DISA upon removal, it was actually still firmly in place. My DISA could've been put back in as-is, but it had a sticking pivot post, and the big O-ring was flattened and leaking vacuum.

The GAS kit modificaction/repair took about an hour or so (I was watching a movie at the same time, so I was slow), with the removal of the flattened O-ring taking most of the time. I re-installed the DISA using a liberal amount of SuperLube silicone grease (from a large tube I bought just for this purpose), to ensure that the new O-ring wouldn't get damaged.