I installed the edge juice with attitude on my 03, when i set it to any of the settings going down the road there sounds like a hi pitched fast paced ticking coming from the engine compt. , I don't hear anything when it is at idle, anyone have this happen? Also I have run it in the first 3 settings, milage, towing and drive, I seem to get better mileage in the drive program than in the mileage program, sounds strange, but it is 1 or 2 mpg better in drive prgm. any one else have anything like thishappen? When reading through all the paperwork on the edge, they recomend not going above level 3 without further mods, is it safe to run it in level 4 without doing anything else to my truck at this time without risk to my engine etc as long as I keep a watch on the guages, my next mods I was planning on were intake and exhaust upgrades i wonder if that will be enough so I can run it in 4 and 5, any thoughts? one last thing, when towing I pull about a 10,000lb load, am I better of in the tow mode or the drive mode for more power? Thanks,