How about Booster Plug ?

That look intresting!

Don't you people have any trust in your motorcycle manufacturers? :surprise: Modern bikes run good ECUs that can cope with basic modifications to a degree, and sure, fine tuning the fuel and spark maps surely will give you more power, but this isn't fine tuning. There's much more to engine tuning than just randomly adding 6% more fuel to the engine. Also, fuel consumption won't go up by 6% with this device unless you're running your bike at wide-open-throttle all of the time. I'd say this thing looks very much like snake oil.

Our bikes run too lean because of a wrong Air Fuel Ratio (AFR).
It's just to have low emission.
We can tune our ECUs. It would solve all the troubles. But what about the future sale ? What about Yamaha warranty ?

Booster Plug is just cheating the Air Temp to make our ECUs adjust AFR correctly.