Is it that they were able to get XXX Hp with out modifying the PC. or that they tried modifying the PC and there was no benefit? MB modified their PC (Referenced from my MB engine manual) and found a benefit. They also kept increasing the burn hole dia and number of burn holes as time passed.

We put bigger valves in high power V8s to get more flow. I want to increase the flow in and out of the PC.

If some one has tried to modify the PC, can we get the specks on what they did and the test results? I have heard of other people wanting to try drilling out the burn holes but never any results.

In the absence of " this is what I did and this was the result" I will press on and find out if there is some efficiency to be had. I like to say there is one way to find out. It will be better, worse, or make no difference at all. Better living through modification.

Please do not think I am being argumentative. I am just following the progressive changes the MB has done and going further to see if there is indeed a sweet spot with the burn holes.

If some one has done this and has the technical data and test parameters and results we could evaluate what was done, the result, and perhaps put this to bed. And it would save me from potentially wasting a lot of time