Yes. This. Or a Boosterplug - which I just got myself. Cheaper then the Rapid Bike and has a lot of the same science behind it.We all have it. Some will tell you that it is the nature of a single cylinder motorcycle engine. Some will tell you it is your riding style, ie: not revving the snot out of the motor in a low gear to do 25-35 mph without the surging/lurching/kangarooing. None of that is civilized.
The fact of the matter is the air:fuel ratio is off. The engine EFI is programmed to run super lean in order to pass EPA emissions.
Buy and install a RapidBike Easy and all will be happy. 200$ and a simple installation.
I think Richard Cranium (Mirius) believes I am a troll simply because I disagree with his and others way of thinking (tuning). I don’t mind at all
OK back to the OP ‘s question
Fit a Rapid Bike Easy, it’s a simple fuelling box that costs under UK£150 with only one wire to connect.
It makes the bike run SLIGHTLY richer (5% according to the manufacturer) than the standard settings.
It connects to the exhaust lambda probe and tells the ECU that it’s running a bit too lean.
Fitting this transforms the bike at low RPM. It will drive smoothly down to 5mph in first 10mph in second and 15mph in third without using the clutch.
The fuel economy on my bike went from an indicated 73mpg to around 68mpg.
But it’s so much nicer to ride. I think there’s another manufacturer who makes a similar unit
Note it’s not a tuning box so won’t increase the BHP.
My bike is currently on around 1200 miles and is a joy to ride in slow moving traffic compared to what it was like before.
It only takes about 5% richer mixture to smooth out the bike.Sadly the laws of physics rarely care about civility. All new bikes run just as lean but only the singles run lumpy. But that’s no real surprise as they ran lumpy long before there were any EPA regulations.
Yes, you can smooth it out with an aftermarket fuelling device which will dump in more fuel. But the real question is whether that is really a good idea or not. Aside from whether it’s civilised to dump additional emissions into the atmosphere.
Manufacturers don’t appear to have ever believed it’s a good idea else they would have done it back in the days before emissions regulations. They didn’t because it’s a bad idea. Riding at lows revs can damage the engine. It’s even a problem with VTwins - any Harley rider ought to be aware of the dangers of lugging an engine - Harley specifically advise riders against it.
The problem becomes worse the larger the engine gets. There is a reason you don’t see large singles much now and why the proposed 490 Duke is a twin.