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Message: [QUOTE="TD-5, post: 972852, member: 12311"] TravisH3 PM'd me for some info on the changes I made to the VGT tables. As I can't attach pictures to a PM, I'm posting them here along with a recap of discussion. The pictures are screen shots of the tables, First set are Vane position control, First picture is my changes, then H&S, & factory settings for comparison. Second set are of desired back pressure, again my settings, then H&S & factory for comparison. Keep in mind the changes must be made to all the tables, 3 tables for Vane position control, & 12 for desired back pressure. Along with getting rid of the hairdryer sound at idle, I was also looking to see if there was any efficiency improvements by lowering the back pressure. the original 50% reduction I made across the tables made the truck laggy & smoke. The settings I have installed now for Desired EBP are a 10% reduction across the tables & 0 below 1000 RPM with a taper in towards 600 rpm at the higher torque values. The Vane position settings are 10% reduction across all the tables & set to 2% below 1000 rpm. The reason for 2% vs 0 was the minimum duty cycle ( travel ) for the vanes is set at 2% & there was some discussion about having the command exceed the minimum duty cycle and what effect that might have on the actuator & or vane linkage wear. I didn't drive the truck much after making these changes as I took it off the road for the winter to do some upgrade work. I still haven't got it finished yet due to unforeseen delays in parts & my job getting in the way. However, the driving I did get in I can say there was no perceived change to performance from the 10% reduction in the tables, & the hair dryer effect is gone at idle like in the video. As far as any gains in efficiency (mileage), I can't say as I didn't drive it enough. If your just looking to eliminate the hair dryer sound at idle, just make the changes to the tables below 1000 rpm. NOTE: any changes you make are at your own risk, I have a very basic knowledge of all this tuning stuff, & this is just what I tried. I am by no means an expert ! [/QUOTE]