alright i have a 95 eclipse gst and i got a boost gauge and boost controller. well i up the boost to about 18 lbs but when i am running it it will slowly creep back down to like 12 towards the end of my rpm range. what causes this or how can i fix it. thanx

 

That is not boost creep. Boost creep is when boost climbs up. I'm betting the boost drop is caused by a small stock turbo.