Mine has been doing this a bit more lately, and alot more often too. Before I talked myself out of utilizing my leadfoot everytime I drove, I didn't have this problem. Hmmm. Maybe giving her the ole' kick in the behind every now and again clean out the carbon and free's up the VGT?
I'm gonna try it tomorrow on my way to work and see how she reacts later in the day. I'll report back then.
By the by, current mods are listed below, and I run in the +65HP mode.