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".......In order for surface roughness to impact flow appreciably, the high spots must be high enough to protrude into the faster moving air toward the center. Only a very rough surface does this. now what this would imply is bigger isn't always better, so a small reduction in area (deposits) will n...

Sonny, Bellow are a couple of links to a company that is located in California that goes by the name JHMotorsports. I don't have any experience with them, but they seem to be pretty big on Audizine with their tuning of the B7 S4. Based on just about every post I've read, there is nothing but good th...

what the patent does (EVERY patent) is states the problem (that is required by law), and then the solution they are trying to patent...sometimes the problem is overstated to increase the proprietary nature and value of the solution...ie, justify the patent... people have been (mis)using, disingenuo...

2manytoys; Does your car see extended operation at 3000rpm or above? By extended, I'm referring to the 20min that is referenced in the patent document. Arthur, As I mentioned, I didn't expect there to be an object in place to wipe the valves as they rotate. With respect to the wiping of the valve se...

2manytoys, Did you get to take these pictures yourself, or were they provided to you by the Audi Tech? I'm curious to know if these valve seat "wipers" actually exist. The way I read the patent document linked above is that a wiping mechanism could be installed to ensure the valve seats properly. No...

This topic has been around in some of the North American boards for more than a year. One poster, who at the time went by the name RI_RS4, seems to have done a lot of work to try and minimize/eliminate the carbon build-up issues with the FSI style engines. To sum up what I believe to be the point of...