Looking for some pointers on my LLY. Just bought it last week and she is completely stock. I already did the PCV reroute and my LBZ turbo mouthpiece is on its way. Other than that I have no clue what direction to go. Do I upgrade to a cold air with the new mouthpiece? if so what part number is the best bang for the buck that looks the best with the new mouthpiece? From there do I go exhaust? buy and install myself or is it a good idea to take it to a shop that does exhaust? I'm fairly mechanical just never done mechanical work on a diesel so I don't want to mess this up! Probably my next question would be the best way to go on a tuner? I plan on pulling a 24 foot enclosed trailer with my stock car in it so I don't need killer horsepower but I want the truck to handle it well. I don't want to get into the transmission and major stuff like that. Enough of me rambling on! Any help is very appreciated!!