its plumbed into the filler neck. I just spent all afternoon messing with it and i'm getting frustrated. I rechecked all the fittings and all the fuel lines. I checked and re-checked the instructions and i did everything exactly how they said.
I read that guys with to low pressure where stretching there spring to make it longer. since i have the opposite problem, i decided to cut the spring down a little at a time. This helped some, but didn't fix it. I ended up cutting the spring nearly in half and it still idles at 20 PSI. However, it drops all the way to 10 PSI at WOT. I'm gonna call airdog tomorrow and see what they say.