Thanks for all the input.
Perhaps I set many of you off in the wrong direction by talking about the backfiring as that is just a minor side issue. As far as all the major dealers in Wellington go, all Suzuki's backfire, or Pop if you like, and my Burg is working OK. That said, using Morley's makes the engine run a lot smother and reduces the popping.
The Morley system is just a delivery system for an upper cylinder lubricant that has been widely used in fleet vehicles such as taxies here. Many Wellington Taxies operators used the injection system very successful and got very hi mileages without problems in their Fords and Holdens (GM) cars. And no, I'm not saying that the high milage was because of the Morley's, although it probably did help by keeping the engines clean burning etc.
I have been using it in my UZ125's and the Burg for a while now and when I forget to top it up in the tank after a refuel you can tell the difference. Of course, its not a miracle worker either, but its not expensive and allows lower grade fuel to be used with little noticeable loss in performance. This is only from a subjective point of view, of course.
Some of you seem to believe I'm messing with the injector system of the scoot, not so, its just a simple drip feed injector type delivery system that puts drops into the air intake in a measured fashion. Actually, if I was designing the system I would use an adjustable metered jet taped into the fuel line before a swirl chamber to mix it into the fuel properly but I guess the drop into the intake air is simpler to achieve when dealing with large intakes on bigger vehicles. The plus is that you don't have to mess around with a squirt-bottle after each refuel putting it in by hand. I got a good deal on the system as it was on special then half price with my "Supper Cheep (Auto) Warehouse membership Card". Cost me a tank of fuel for the injector and included a Ltr bottle of Morleys. Actually, that makes the injector effectively free if you consider I would have purchased another bottle soon anyway, LOL.
All my expanding above notwithstanding, it does sound a bit more complicated finding a place to introduce the Upper Cyl Lub that is after the Throttle butterflies and the burg having two separate chambers makes it not simple as I don't want to upset the balance of the mixture between the two cylinders. Perhaps I need to put a mixer in the fuel line and let the computer to adjust for slight differences like it does for straight petrol differences. Apparently, there are bikes running the system but not sure if they are twins or singles, I will have to email the distributor and ask.
Has any one got any more thoughts in the light of my comments, (I have checked my Headlights, got + 120's as we are not allowed to retro fit HID systems in NZ). Has anyone had experience with the system in anything and have comments? I am just as happy with neg comments as I am with how too's. Its a possible project in the making I'm not worried about being told I'm stupid <smile>