Had a problem this weekend. After idling for a minute or more at a stop light,atempting to rev the engine and give it gas, it wouldn't go past 2k rpm or so. Almost like it was getting no gas at all. Had to feather it for several seconds and it would then catch and rev up so I could go. It happened 3 times and again this morning.Had the Trak key in for all of them. Today, I caught a red light and it did it again, switched keys as quick as I could and it fired right up, no problem. Called ford yesterday and today,told me don't use the trak key and drive it for a couple more days and he would in the meantime contact Ford Racing and see what he could find out. So, silver key works fine and red key has problems.I thought maybe gas related, bad tank of gas? But, Its been on two fill ups with different gas. Had one tank of ethanol free last week (93) octane and ran fine. Premium gas all the time ,also 93 octane. So, I'm thinking a glitch of some kind in the download?Any one else have a similar problem?