Thread: Boost reads in the negative?

When idling you should pull around -20 VACUUM. You don't want to see boost until you get on it. That's completely normal.

Originally Posted by Sandman

When idling you should pull around -20 VACUUM. You don't want to see boost until you get on it. That's completely normal.

Ok that makes sense I guess ill rip up the freeway a bit and see how it goes. On a side note, and this could be unrelated. My MPGs went down the tubes? Car is running just fine and it could be cause its a fresh tank and I havent had a chance to take it on the freeway but my MPGs is in the 16s and its typically 20-23 range mixed. Could these be related?