Hello everyone. I jsut want to say this site rocks!!! Tons of great ideas. Normally i just read in different forums but never post. Except i have a D-LEMA. i bought the pcv with autotune for my 2012 stryker. i hooked it all up took the stock 02 off (as it states) and put the autotune one in. by doing this the pcv 02 optimizer isnt hooked up. so because i wasnt sure, i called dynojet. they told me i have to use both sensors, stock and the autotune. so if thats the case, why th F*** doesnt it say that in the install instructions? i have seen on this site where some guys say yes to both, and others say no. i dont know what to believe. Sorry for being hostile but i dont know what to do. $700 wrapped up in this thing and cant even figure out how to install it properly. Please help the newbie. :'(