OK enough of the bashing geeez, this is my first time to own a duramax, all ive had befor were vortecs, i had a stock 5.3 that ran like a bat outa hell, and everybody told me its just one of those motors built rite, so i thought this mite just have been one of those things, i appreciate the bashing cuz i would do it myself to someone else, any suggestions ona ram air, and should i take the muffler off my turbo back exhaust and go strait