Just hooked up the generator this evening & took the truck for a drive. Im using the water4gas setup. The truck seems to run better but that might be because I WANT it to. I piped the hose from the generator into a hole I drilled right before the air intake. Im wondering if that's the best place to put it. Does anyone have one hooked to a GMC pickup, around a 2003 model? Im wondering if there is a vac hose I could splice into instead of running the HHO into the drilled hole. Any help would be appreciated. Thanks!