Hey Tommy,
I have a DGV on my car, and I don't even have the water lines hooked up. It hasn't been giving me any problems, and I've had it for over a year. I guess they cool the maniflold, which would be nice, but I don't have any need for it or care to fix it as I will be putting dual SUs on it next summer. My DGV has a loose throttle shaft, and that causes some problems, but I've run into many others as well. I would suggest taking the cover off of the airfilter assembly and, by hand, open the throttle and looking at what happens, just make sure everything in there is working correctly and in the right order. um, this isn't much help actually, and I can't think of what else to talk about, but my car has the choke all messed up, and with my current setting, I need to have whatever it is hooked up too all the way out. SO, in other words, my DGV is messed up, good luck with yours...

Peace,
Kyle