| Rembrant.
The thread is M18 x1.5
The sampling should be done before the cat.
The Post Cat Sample would play havoc with the true readings from what I have been told.
You could have one of your stock bungs replaced with the M18.
I drilled though the divider at that time for piece of mind..
Sampling just 2 cylinders while not perfect will get an accurate reading.
The system isn't sampling individual cylinders anyway. Its always a percentage of all in the end.
The ideal system is aftermarket headers with no Cat or divider.
Most guys chasing power will go this way.
Hey 1400R,
Thanks for the reply. I'm all good now...after a little more research, I got it all sorted out. The factory header on the Concours-14 is a little different. I'm going to install the O2 bung on the RH side, which will sample cylinders 1 and 4. I'm fine with this now...my little peach pit sized brain has relaxed a bit over the whole thing;).
It's only temporary anyway, and is a make-work project until my full exhaust system is delivered. |
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