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I just made a 400+ mile trip towin a lil u-haul trailer. After droppin the trailer the truck is very sluggish. I went and had the oil changed and a new fuel filter put on this morning hoping it was that...but no!!! Its slow to come to boost and only hitting 22 max. 03 LB7 with edge w/attitude. 94k miles. Even on stage 4 and 5 its only hitting 22-23 when i know it was around 28-29. Air filter is good. All guages reading correctly. EGTs seem to get higher under normal driving! Checked everything...whats the deal??? HELP please