:fm: How come the needle on the boost gauge (factory) rises when the truck is turned off? Does everybodies do this? If it is just me, is that an indicator that something is wrong? :-?
Thanx
When the engine is running at a idle there is a vacuum present. When you turn the engine off the vacuum goes away so the needle rises up into the zero boost/vacuum area. At least that's what it does in my L.
