Ok, I'm totally new to all of this hole boost thing. I did a search on this and have come up with nothing. I have currently Stage II, Gm Stage II, NGK BKR7E plugs gapped at .40 and a k&n air filter. I also got the re-flash by GM as well. Earlier I was hitting 15lbs. of boost. Now, It has dropped to twelve. Any idea what could possibly going wrong? Change plugs maybe excetra? Car has 13k on it had stage II installed at 4k. I'm thinking plugs but could be very wrong. So far everything people have recommended to me I have put in. I"m just really confused by this.

 

first you should check your plugs and if they are fine then maybe have the dealership that installed your stage 2 to redo the re-flash bc the computer might have lost it.