Got my heads ported

That’s why u can’t race flow benches.

Exactly.

The rework is a 15% improvement.
That’s the important part.

Both my current and previous bench have no “inputs”. There are no electronics to input anything to.
The numbers are easily repeatable to within 1%.

I don’t claim my bench is the last word in absolute accuaracy, but it does repeat well........ and the results are usually “in line” with what many other reputable shops would get for numbers.