Went to "jotech" the other day and picked up a set of these o2 adjustable jets
It came with 3 jets to adjust the exhaust flow to the sensors...


My question is, does it work? It's basically a spark plug fouler but its meant for the o2 sensors...

 

I seen you could just use the spark plugs foulers also, check youtube some guy with a Ram used it he said its a waste of cash to buy what you bought for 25 bucks, me I don't need it I need a 02 Stimulator for Headers...GL...I hear they all work anyway....

 

looks to be a trial error thing. if you have no cats exhaust will be hotter which means use a smaller port to limit hotter exhaust gases from getting to the o2 sensor then use a scan tool to read o2 readings if there are no codes then you got the right one. like i said before gunna be a guess and check thing. good luck guinea pig