up for sale as of 20 Aug (ZEDFEST) my powerflow backbox. £150 or offers there about, collection only from zedfest or cambridgeshire. i am getting a DLV backbox mod. The powerflow gives a nice deep burble but at 2000rpm there is a bit of a drone and as my daily commute is around the 30 - 40mph (2000rpm) i am going to change it.
https://www.youtube.com/watch?v=Ba7TjwJqbq0
https://www.youtube.com/watch?v=Ba7TjwJqbq0
