I plan on goin to the dealer tomorrow about the fast idle TSB my truck has 4600 miles on it now are there any other TSB's I should be aware of?? Also what is the best exhaust system to run? I will definately go with 4" from turbo back. A friend of mine with a Powerchoke just put on a 5" hypermax system that is all stainless and pretty sweet looking althought the down pipe was only 3. 5" Does anyone make a 5" for our trucks? Is it really necessary? I have considered stacks and someone today said it would fry the turbo because the stacks let it spin too qucikly. Any truth to this? Thanks for all your help. Oh yeah my silencer ring fell out the other day and the snorkel also fell out. I found them in my garage late 
