The owner of this Kwak had fitted a Power Commander PC 3, K&N filter, 02 Eliminator and Canadian-made Pine exhaust can, and bought it in for a fettle on the Dyno. Now we’re always a little dubious about bits we haven’t personally tried. and proved, over the years, but for a 636 of this vintage it made 115bhp at the rear wheel – quite respectable, really.