i have indeed seen that image, its been a while though.
Well in this case the O2 sensor is before the valves.
I guess this could be debated, as to where to install the valve, and how well the exhaust will still 'suck in'
I guess if you installed the valve about 18" or down the dp and had your O2 sensors before hand, you would be fine.
Anyone have some tech talk or experience on this.
Thanks for the pic
