Originally Posted by tighed1
I believe that the 4000 ft difference in elevation may be the difference in boost, not a leak.
Boost is tapped at the "Y" that comes out of the IC. Have seen a lot of us have used the same spot.
I installed mine at the Y as well and that was the issue. I had a loose worm clamp that was leaking boost. My gauge was reading 13-14 with the Code 3 as well, then I went back over all the possible connections and found the issue. It looked perfect, but is was just not seated correctly. Now I see the 17-18 on the street all the time. The oil blow thru makes it very easy to get a leak. Just my experience....Good Luck!