Genesis HHO and Suburban 350
I have a 1975 GMC Suburban with a 350 V-8 and a carburetor. No emissions equipment whatsoever, not even an O2 sensor. I added HHO two days ago and I can already tell a massive improvement.
I changed the metering rods on my Edlebrock carb, which leans out the top on the highway, and turned the idle mix screws in a lot. I used a bubbler and ran it through a flash arrestor.
I inserted the HHO bubbler output hose to the constant vacuum port (for service on the carb)...usually this port is capped and not used. It directly puts HHO into the venturi through the nozzle (with this brand of carb)! I made everything vibration-proof and ran it on a long haul.
What normally would take a half tank took an 1/8th of a tank. You tell me. no loss in power...I would even report an increase, considering how much I leaned it out. I think if you lean it out, but add the HHO to "fill the gap"...then it works best.
We will see. It's only been two days. :)
My opinion is to get something OLD in good shape and then add the accessories you want. Suburbans are cheap, plentiful, and you can haul anything. I might be getting better than 20 mpg for all I know. I let it idle so long (using gas) while testing that it wouldn't be accurate until the next fill up.
The only issue most people have with HHO is trying to accommodate emissions equipment...even though it would blow lower stats with HHO installed...ironic. Go old, if you like old vehicles. Fix it up with the money saved from buying something for 20k.
HHO...perfect.