Just thought I would let everyone know that I had a great experience, at Dyno-Mite Diesel in Monroe today. I called a couple of days ago to ask them about drive pressure, since I was getting almost 42 lbs of boost out of my hy35. They informed me that I was risking head gasket failure, if I continued to use the hy35. Matt and Lenny recommended that I buy a larger turbo, to keep the drive pressure low, and to provide more air for when I am ready for injectors. I had the turbo installed today, and to my surprise they dyno'd the truck. Matt let me know that I had gained 40 HP and 50 ft LBS. I had no idea that without adding some more fuel that I would gain that much HP. These guys really know how to make real horsepower. Thanks Dyno-Mite!