I pulled the 228 cam out and sold it and replaced it with a stock 6.0 cam I had laying around. I have way more low end by far and the 3200 converter makes it fun to drive. I didnt touch the tune yet but my fuel mileage has went to 20 to 21 on the hwy. I got 400 miles to 20 gallons of fuel yesterday. Yea it idles at 850 instead of 550 like it should but wow what a differance. I dont have the high end pull from 4000 to 6500 rpm but I can snap your neck with a hard launch. It feel way faster than it did but I do miss the strange looks I got with the 228 when I was idleing around town wondering wtf.