For some reason, out of the blue I can't get more than 10inHg vacuum on my gauge. It's plumbed straight from the intake mani so I know the reading is accurate. However, normal driving, vacuum won't go under 10inHg.

There's no vacuum leaks (at least can't hear any) and the gauge doesn't fluctuate like it use to when there was a small leak. And I've noticed when engine braking, in any gear, the gauge hits 10 and won't go any farther. Like I said it doesn't fluctuate at all like a vacuum leak, but it just won't pull the 18inHg like they do stock.

I CONTRIBUTED TO THE WIKI!
ah... turbo. I love the turbo, the boost, the speed, the sound.
and its all better when you do it yourself. cheaper too.