well yes, a lower quality fuel than what they recommend would obviously impact performance... it is people’s choice what grade fuel they use.... a £500 option that only works properly in certain conditions is slightly different.
The ABT module it seems has issues, which are far deeper than fuel quality.
My post, (albeit not about ABT), was that a statement on fuel RON not effecting power output is even stated as the exact opposite within the owners manual.
Bringing it back to the ABT, I would be peeved to not achieve the stated horses 100% of the time.
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