OK, due to Bill's sire being broko, he can't upload the graphs.
I've kept you in suspense long enough.
Anyway, long and short of it is that the logs were in fact the red herring.
Power has now dropped down to around the 300 BHP mark with the OEM manifold fitted. Disappointing to say the least.
We had to make several adjustments to the config of the map, including fuelling, which shows just how much this affects the engine.
Boost has also had to be dropped
It looks like the OEM manifold strangles the flow to the point that it just can't get the air out.
The torque is falling much faster than it did with the 034 on.
Everything does fire up around 800 RPM faster though, which is interesting, yet seems to be counter productive.
So, the facts are on the table people. The high flow manifolds do aid flow as thought before.
This seems to be more apparent on the large port heads ultimately. The smaller port engines don't seem to suffer so much from the smaller runner on the OEM manifold.
Anyway, regardless, I am 30 BHP down from the ported K04 manifold.
Conclusion - they do make a difference in peak power. Although I would say the it is more useable with the OEM manifold fitted due to the earlier spool.
Time to look for a third manifold....
. JBS looks to be the winner.
Welly is sad