I recently purchased a box stock '95 2500 CTD 2 wheel drive, Auto with 80,000 miles that added a 4" exaust with an Aeroturbine muffler and an Isspro 3 guage cluster. My readings are 16lb boost WOT, 1100 degrees max on the pyrometer, and the transmission temp guage tops out at 195 degrees. Are these readings what I should expect with a stock motor? Will a 2 stage air filter add more boost? Thanks for your valuable advice. Bill Zehner in Portland Or.