Went to the expo today and saw the BP roadshow.
They were running two Saab turbos side by side on identical Dyno Dynamics rolling roads in a sealed booth.
The one on the right was running 95ron the one on the left 97ron BP ultimate. I saw three power runs. Typical figures were 95ron 167bhp 97ron 188bhp (I did see as much as 192bhp).
That represents a 21bhp difference or nearly 13%
Given that BPs own ultimate website states that 7% is the maximum potential gain running BP ultimate 97 can you believe the results?
Incidentally on the way out I was given a nice booklet about 102. I asked if this was the new super expensive fuel and was told 'no it's only 6p more than regular unleaded' Methinks they were confused as when I checked the BP website it states clearly £2.42 per litre.
Perhaps they 'accidentally' filled the Saab on the left with 102...