Threadbare

Guys, here's what transpired.  Kev politely declined as he also couldn't help with the 2019 model.  Searching this forum and others I found Mototune in Adelaide. Joel Sim said he often fixes messed up ECU flash tunes from others and as I had doubts about sending the ECU interstate, he made me a pretty amazing guarantee.  I'll be impressed, or it'll be free!

Fearful of relying on an interstate supplier should I need further suppport  I found a Sydney shop and explained that I'm not looking to race the bike, just want smoother throttle response and cruising without the sense it's miss-firing. They confirmed they use Woolich and could fix the 2019 Tracer GT so I left the bike with them for a day and paid $500.  The result - I couldn't notice much difference. If anything, it was worse. Over the next few days I got so fed up with it that I took the bike back in and they said all they could do was richen the mix a bit which should help.  It didn't.  So I called Joel at Mototune back and he wasn't at all surprised and re-committed his original offer.  So I stripped the bike and sent the ECU to him by Express Post. It arrived at the Post Office on 23rd December and by 6.48pm Joel texted that it was done and he'd send it the next day (Christmas Eve). Indeed, he messaged that as he was flat out, his wife had taken it to the Post Office for me!  It arrived on 29th (delayed due to Xmas) along with Joel's OBD tool on loan. I disconnected the O2 sensor, installed the ECU, put the bike back together and followed Joel's instructions to clear the ECU faults. Then went for a ride.  What a difference!  Much smoother, more consistent power through the rev range.  The top speed limit is still removed,  but I'll never test it and it wasn't part of my brief. I dropped Joel's OBD tool at the PO the next day before going for an extended ride.  If anyone has any doubts about flashing their ECU, let my experience convince you to go ahead and do it, but don't waste your money, use Joel!!  To cap off a great service, he charged me only 60% of his original quote (eventually 1/3rd what I paid for the first flash). Obviously I couldn't recommend Joel at Mototune more highly. 

The aforesaid is helpful, thanks all.  So does anyone know someone in Sydney who can flash a 2019 GT using Woolich?

I spoke to Ben at Creative and he doesn't use Woolich which is the only way with the 2019 models. He also explained that O2 sensor mods like Kev's don't work because the ECU remaps to compensate.