Need a little help

[blackandstacked]

Last week I adjusted the valves in my truck. Been good up till tonight. switched to one of my higher tunes and romped on it. Now it has a slight tick at idle and a hell of a rattle when the engine is under a load. From inside the cab it sounds like an exhaust leak. From under the hood it sounds like a lifter. Truck runs smooth and has no miss or loss of power. Any suggestions?

 

[blackandstacked]

Just drove it again and under full boost it has a new whistle that was not there before. Anyone heard of up pipe problems on the LB7?

 

[Random_user]

I had a friend that melted his up pipes. That was a nice burnout, though. Did you get the push rods in place right?