I posted this in the engine and drivetrain section and everything mentioned had to do with performance parts, so I'l try it here.
My truck is being moody and I can't figure out why. Sometimes it feels like I got an anchor dragging and the truck feels like a dog. When this happens it still builds boost, RPM's and holds 14 pounds of fuel pressure but no smoke at all even with the Comp on 5 x 5. When it's not being being moody everything is the same except for smoke, on 5 x 5 you can't see the cars behind you and it feels like a rocket launching. Even with the Comp turned down to normal settings I still get some smoke when it's runnin good. It feels like it's defueling early but the RPM's are consitant. I have checked for pressure leaks and fixed what I found, this was a bad elbow from Comp so they sent me a new one. It will build up to 30 pounds of boost. Even Scooby Doo and Shaggy couldn't solve this one.

 

Have you checked for any codes?

 

I haven't had the dealer check, but Auto Zone got nothing. No check engine light, actually no other symptoms at all. Truck still has plenty of pulling power to. The Comp was reprogrammed about 3 months ago and a new Blue Chip IP installed about the same time.

 

Still lookin for a guess here.

 

Your comp tap could be an issue.

Randy

 

Im going to have to say its a problem with the box, or the tap.

 

It's got the Blue Chip Cover on it. I'm gonna pull the Comp wire this weekend and solder it just incase the lead connection is bad.