top of the picture the column with the text "Max. Power" and the blue marked line. "186.64 bhp"
In the first chart where he compares tuned to stock he gets 174.89 tuned with a SAE correction factor of 0.934. This equals an uncorrected hp of 174.89/0.934=187.25. Then it looks like he reinstalls the db killer. The final chart gives a max hp of 186.6 uncorrected with the bd killers out. I assume the 184.46 is with the db killers in. If you correct these by multiplying by 0.937 (from the previous dyno runs, you get 174.8 and 172.8. I don’t know where he gets 179.98 from this chart. The data need to be standardized and SAE is a popular and conservative method.
The problem is that Richard is looking at the uncorrected data with and without the db killers, the max hp are shown on top as 184 and 186, respectively, but he says something like “the hp of day is just under 180, no correction” while pointing to where the cursor is, at 179.98.
