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Message: [QUOTE="6.0 Tech, post: 1567207, member: 23001"] I was just talking about this with a marketing guy at the shop today. He had seen a YouTube video on it in a 6.7 and it allegedly quieted the engine down by x amount. However, while watching it, I noticed the stock engine went to an engine with a piping kit installed and heat wrapped, and it sounded almost like the fan was on in the first reading, and not in the second. It was just a quick video so it didn’t get into any driving or testing or anything. This also goes along with the 6.3 liter 6.0 that’s being made by one of the big name engine companies, can’t remember who. They’re putting a 6.4 crank in a 6.0. They have dyno graphs showing they gained like 200 horsepower and 3-400 ft/lbs if I remember right. However, knowing what these trucks do on the dyno, the original dyno was definitely stock. It made somewhere in the neighborhood of 260ish hp and 500 or something ft/lbs, definitely a stock truck. Then they put a “tune for the extra displacement” on. It made hot race tune numbers, 425ish and 875ish. The torque number is about 50 ft/lbs high, but it’s not apples to apples, same with this guy on YouTube with the dimpled pistons. However, my personal feeling, is that if there is a fuel mileage gain, the over the road truck guys would be doing it. If dimpled pistons gained even .2mpg, they would pay out the ass for it, as it would probably save a shit ton of money a year in fuel only. If it was an emissions or noise thing, the oems with their billions of dollars of equipment, would do it to lower the emissions slightly, so they could run the truck slightly harder to maintain the dick swinging contest of the new diesel truck horsepower wars. Think of the marketing they’d do with x brand makes 525hp stock, while y brand only makes 425, etc. Personally I don’t think the performance world is big enough in the diesel side to switch to it, but when I was going to school, had a teacher put it this way when someone asked about some of the new technology spark plugs. He said if they were worth anything, top fuel would run them. They run standard plugs, because there is no horsepower gain. These are guys that’ll spend half a million dollars on engines in a weekend to win, if it meant even 1 extra horsepower, they would do it because it may be the difference between winning and losing. Now, knowing the piston design is much different, I would still think if there was anything to be had with dimples, top fuel would do it. My personal feeling, the dimples are disrupting the flame front to cause multiple little fires, instead of one large one. But honestly, my opinion don’t mean shit, so if there is legitimate backed up independent testing, I would read it and base my opinion off their results. Sent from my iPhone using Tapatalk [/QUOTE]