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Technical Questions

Why didn't you design the BoosterPlug to use the original AIT Sensor in the Airbox ?


The BoosterPlug is actually using both the signal from the original AIT Sensor and the BoosterPlug cable sensor.

The non linear behavior of the NTC resistor sensor element is not easy to offset 20 degrees over the entire temperature range, so to produce a stable ourput in all ambient temperatures it is necessary to use a combination of the signal from the two sensors.

The consistent temperature offset is a very important feature of the BoosterPlug - This is what makes plug and play tuning work as it should.

Why does the BoosterPlug sensor have to be on an external cable ?


The bikes own AIT sensor and the additional BoosterPlug sensor will have to measure the same temperature for the enrichment compensation to work correctly. A small difference is OK, but more than a few degrees difference will gradually minimize the enrichment in mixture we want for to improve driveability.

And the location where you install the square BoosterPlug module will NOT have the same temperature as measured inside the air box. On most bikes, the outside of the airbox is a no-air-flow or low-air-flow place, so it's influenced by engine heat. The temperature here can well be 20 degrees Celsius warmer than inside the air box that will have a constant flow of cool air.

If you still think the temperature will be the same on both sides of the airbox wall, ask yourself this simple question: Why would all motorcycle factories be adding the cost of an AIT sensor installed in the airbox if they could just measure the correct temperature outside the air filter box, right next to the ECU.

Nope - these guys are not stupid, and the AIT sensor is installed inside the Airbox because it's necessary. And that's why we must move the BoosterPlug sensor sensor out into the airflow.

This will be sufficient to make the original AIT and the BoosterPlug sensors see the same temperature, because the constant air flow through the air filter box means that the air never stays long enough inside the air filter box to heat up.

On a few bikes, the AIT sensor is located directy in the airflow and not inside the air filter box. For these models, the BoosterPlug will have a short sensor cable.

Will the richer mixture destroy my Catalytic Converter, or shorten its expected lifespan ?


No !

The Booster Plug will richen the mixturee from aprox. 14,4 : 1 to 13,6 : 1. This is fine for the Catalytic Converter as well as for the engine.

It's correct that very rich mixture can destroy the Catalytic Converter , and that's why you should be careful what kind of tuning module you install on your bike.

Do your homework and buy from someone who actually understands these things.

Feel free to consider if we belong to that group :-)

Will the BoosterPlug change the ignition timing on my bike ?


No, the modification of the AIT signal does not affect ignition timing.

How do you know that +6% of fuel is the right amount for my bike ?


Partly by experience, partly by knowledge.

All modern bikes must pass the same environmental tests, so they all run leaner than desired for optimum performance.

The ideal Air/Fuel ratio for gasoline powered engines is 14,7 : 1 (14,7 kgs of Air to 1 kg of fuel). In the real world your engine will run very badly end extremely hot at 14,7 : 1. Usually you see values around 14,4:1 on modern stock engines.

14,4 : 1 is a little richer than 14,7, but for performance and rideability you want to see values around 13,6 : 1 (This is for modern engines - older engines seems to like the mixture even richer - down to 13,0 : 1)

This means that if we're running the engine at 14,4:1 and we add another 6% of fuel, the calculation will look like this: 14,4 : (1 + (6 : 100)) = 13,58 : 1

So the math fits nicely, and is backed up by experience - plus 6 percent of extra fuel is what we want to achieve our goal.

Why don't you show the Power improvements of the BoosterPlug in a Dyno graph ?


Like every other plug and play fuel optimization device in the market, the BoosterPlug is about low RPM rideability - not top end horsepower. 

The BoosterPlug will improve the rideability of your bike (a lot !), but its hard to prove this in a graph, and we decided not to join the "Dyno Graph Pissing Contest".

There's so many possibilities to tweak the Dyno output to make it show whatever you like to see.

Some of the Dyno Graphs you'll find on the internet are pure imagination, and we prefer to keep our product in the real world :-)