So as others have professed an interest, inspite of the vast improvement I saw after giving the intake side a thorough clean, I have notoiced a couple things...
 the tank, which was modofied and brazed in the process, seems to have perhaps **** at the braze... This may have led to a slight "dampness) which may have contributed to the filth accumulating ...( How funny, the webhost has an issue with quacked ( use your noodle)... !!!)
  I just got my injectors back from a service.  Really happy I bothered TBH.  They test them before and after. Mine has a better spray pattern but significantly, an improved flow rate...+20cc/min inact. I know the fuel additive might be beneficial but does it test them, show you the result, and service filters and o-rings into the bargain...? Good service here i the UK.  Fast turnaround postal service, two injectors, less than £35...
  Anyway...I feel vindicated in my assertion about the value of a sonic clean....!! 

Hi Tim, thats a good result. Does the bike feel any different?

  Graeme...
Im a long way from getting her back on the road. Its winter here, albeit still markedly warmer than you might think. The tank is in a queue for a sealing process with a local specialist...then to paint. The task of trying to close hairline cracks in the 'wafer thin" pressed sheet and brazed custom work is smewhat intimidating. You end up chasing the crack around the houses whilst never closing it satisfactorily; at least, that's the risk...!
  Im trying to fit up some Oz lightweight , forged aluminium rims too..Just waiting on a custom rear disc before I can fire up the lathe and start to build me some fancy brass bitz & bobs and get it lined up atm..
 I guess what Im saying is Im not really going to know 'til next spring. My gut feeling is I surely cant fail to notice. ?  She sure felt somewhat strangled at the top end and now I suspect I know why..Clearly, top end FOT is where the flow rate disparity will be at it's most significant.
  Roll on spring...!   

Tim

 
 
 

Custom disc..

Like the oz wheel, titanium spindles maybe next on the list ? i'm thinking of going down that road.

 Been giving some thought to the results re: injectors.
  Yamaha 1700 (2005) v-twin max flow rate after service. 300cc/min ( static )
  Compare this to a parallel twin 900cc bike (Nuda-2012) max flow rate after service 330cc/min

  https://en.wikipedia.org/wiki/Volumetric_efficiency     ...!

Tim and Graeme,

Have you ever thought about a proper programmable ECU like a Megasquirt?
I know stage 3 exists (heck, I bought mine off you Tim).  or there are certain Micha flashes... but with all the sensors,  like O2 etc, I can only  surmise that a programmable ecu would be a logical step.  Its not uncommon for landspeed racers to use them. Rip out the old stock unit, input the known variables, and let it program itself to a better state....

Remember that with stage 3 there are no o2 sensors and The ignition and fuel are set for a stage 3 kit.
If you go beyond a stage 3 and do head etc then its reasonable to think a little more may be possible from the ecu.
Since the fuel is done by the dyno but ignition changes are not possible then a fully adjustable ecu could give a bit more.
But it would be just that, a bit more, probably not worth the effort of all the setting up.
But, you might be bored------------------