Originally Posted by
Dornfelderliebe
Superb reference material Evert well done.
Going off thread, the part about the transfer port enlargement does not match my experience with my Mk4. This winter I shall try to reproduce my tuning experiments and shall record before and after figures with the port enlarged to 1/8 of an inch.
Perhaps BSA set the port to match an output of 9fpe and the Meteor can cope if raised to 11.
P.S how's your weather, we are about to face a cold spell (panic stations all round)