In article ,
Rob Morley wrote:
Tescos 99 stops my M3 from
making horrible low rpm pinking noises.

So would fixing the timing :-)

You'd certainly expect the knock sensors to do their job.

IIRC, the M series is among the few where super is recommended.

--
*Don't worry; it only seems kinky the first time.*

Dave Plowman London SW
To e-mail, change noise into sound.