Havent had time to update on what I tried to do as I explained up above. I did get a chance to try out that home made injection through those 2 extra ports on our throttle bodies and there just wasnt enough suction to get the water to go through. Dont want to cut/drill a hole out in the intake tube so I just scrapped that idea.
Maybe Ill look into the stuff that you guys linked and try that out. Or find a kit on ebay or something.
Still getting ping between 5 and 0 vacuum . Not getting ping anywhere else though.