Hey guys my brother recently bought a 2006 SS cobalt. And I have no idea whats under this hood so far to me it looks like it just has a full exhaust on it with a stock supercharger. I have no idea if this is normal or not but his car pushes about 12 lbs. at full throttle. Recently, however, it only opens up to about 5 lbs. I know that this is not normal for this to be happening but if anybody to give me info. or advice about this situation it would be much appreciated. Thanks guys.