Got to work today got out of the truck and there is a smell coming from the truck, has the smell of burnt rubber crossed with hot metal with a slight oil smell... No leaks that I could see when I left this morning. Truck also does not seem to be shifting as smooth as it use to (pre-dyno run). No Codes, all fluids are clean and full. Am I just being paraniod here or is there something i need to check?

 

Could be as simple as something you ran over on the road that may have splashed up onto a hot surface.
Sounds to me like you did all you can. Check all fluids for level and a burnt smell. I'd say not to worry about it unless it's still there after a couple days...

 

Its more the smell combined with the way its driving thats concerning me.

 

check for balogne in your engine bay, on your exhaust pipe, and in your brakes. Happened to me once.

 

I supposed the WOT throttle of the dyno runs could have done something, but without a code, gonna be tough to track down...

 

Your catback...Does it go near the spare tire? i would check that location out.
Also, as Hammer stated, could be a bag or something that got sucked against your pipe and melted.

 

Im guessing you have already looked at everything under the hood but when I put on my headers my AC lines got free andwere hanging close to them and only under heavy load and or acceleration I would smell burning rubber and somthing else then would go away ..... thats on a 4.7L not sure if its the same deal on the hemi's. Some foil heat tape and all was well..

 

I'll have to check that cause it basically wrapps around the spare