I've fitted the the cheap version of the Accelerator Module to my 2010 GSA in the hope of seeing whether a richer mixture may improve my bike's behaviour in a number of areas. This is the result of this morning's ride of my usual commute of 40 miles through town traffic, dual carriageway and motorway with an ambient temp of 10 degrees:
"Lurching" whilst riding at slow speed - much reduced.
Vibration under load - much reduced
Popping on overrun - didn't notice any this morning
Economy - too early to tell.
Engine hiccup/fluffing as pulling away - still had a minor hiccup once this morning.
Other observations:
Weirdly, unexpectedly, I could've sworn it felt smoother whilst cruising even though I understand that it should have no effect whilst on a steady speed/steady throttle. I'm just writing this off at the moment as an illusion.
Whilst pootling along at 30-40mph to get onto the motorway the bike just felt much happier trundling along in a highish gear with very little throttle - nice and easy and I was reminded more of my old Brit parallel twins (Norton Triumph AJS BSA) than the recent fuel injected boxers I've owned.
Acceleration out of roundabouts at say 30mph and onto a straight felt smoother, more relaxed and yet quicker in getting up to motorway speeds.
Over and above every individual facet of the bike's performance the real benefit is that that the bike just feels so much nicer to ride!
I can't say that the Accelerator Module is the best solution and can't say how it compares to the alternatives because I've not tried them. I also can't give you empirical evidence of any improvement as I've not dynoed my bike.
But I can say that for £30 this has made a marked improvement to my bike (according to the seat of my pants), addressed complaints that I had and confirmed that my bike was running too damned lean as standard.
For me at least, it's already proven real value for money.