Booster Plug..... Anyone?

[Pete Erickson_imp]

I have a Booster Plug installed on my 2012 BMW R1200R. I installed to help mitigate low speed throttle twitchiness. It helped, but did not completely cure it. The product is poorly named. The name implies that it boosts something. It does not, what it does do is make the ECU think that the ambient air temp is cooler than it really is. That causes the ECU to enrich the fuel mixture. If my memory is correct, it only does that at low throttle openings. It supposed to help low speed throttle response and exhaust popping on deceleration. Most motorcycles use an open loop system emission system. The ECU only looks at ambient air temp and O2 sensor data at startup and low rpm. When the revs reach a certain point, the ECU relies on the fuel maps programed into it.

If you are looking for power increase, do not purchase this product.

[Cormanus]

A bit more research has led me to the understanding that the efficacy of this unit may well depend on where the silver jobbie on the end is inserted.

JK

Inserted where if you don't me asking?

Inserted where if you don't me asking?
Pauley, I don't mind you asking, but I can't possibly say on a polite forum like this.

[curlyjoe_imp]

R478's black box with the adjustment knob is supposed to work by adding variable resistance to the circuit between the intake air temperature sensor and the ECU. Adding more resistance to the circuit fools the ECU into thinking the intake air temp is lower than it actually is so the ECU sends a signal to increase the amount of fuel to the engine. I wonder if there is actually anything functional in that black box!

The booster plug just relocates the air intake temperature sensor by taking the OEM sensor off line. Strap that sensor probe to the side of your fuel tank and if the air temp next to your tank is lower than the location of your OEM sensor than the ECU sends more fuel to the engine.

[R748_imp]

Good details Pete and Curly. Enough of the silly chat (myself included). Nicely described.

[Henrik_imp]

My bike runs just fine as it was delivered from the factory!

[slevin_imp]

Have a booster plug fitted by the previous owner. Want to try disabling to feel the difference. Now yeah, it's smooth, but the lower rpms - the higher is fuel consumption. Currently I'm averaging 36-39mpg, while on a racetrack(!) it was 45. Will fiddle with it tomorrow