Can I get some input on the white wire mod i've been hearing about?

excerpt from www.steveturnbull.co.uk/buell/thexbpages/XBPerformance.htm

XB9 White Wire Mod - On the XB9, there is a white wire, which can be disconnected and results in a noticeable improvement in performance.

It is possible to either cut the white wire (bad idea) or remove the connector from the plug (better) For these connectors, you want the equivalent of a "pick tool". The connectors latch into the blocks by a little clip mechanism. Once you've separated the two halves of the block, there is a "Secondary Locking Wedge" that is a sort of cover over the female part of the connector. You have to prise that off before you can depress the terminal latch and remove the connector.

The white wire is on the grey deutche connector between the black/white and the pink/yellow wires, the second one in from the centre in the front row. This white wire goes to the vehicle speed sensor. This wire is related to the dip in performance to pass noise emissions tests, hence removing it on a 9 should improve performance. On a 12, there are questions as to the results.

Any help at all would be welcome...