This article is for everyone who want to install a Booster Plug on their motorcycles, but don't have that 200 dollars to spend for it. You are definitely in the right place, because I created a guide which explains how to make your own Booster Plug at home, just by buying some components on Amazon and Aliexpress.
The guide is customized for any Ducati motorcycle, including Monster, Scrambler, and Superport, because all of them use the same Air Temperature Sensor, an NTC (Negative Temperature Coefficient) thermistor manufactured by Magneti Marelli (code: ATS05), the Ducati part number is 55240121A.
- Thermistors: I bought the following ones, 5 pieces, for 988 Yen (about 9 dollars). These thermistors with B=3950 and nominal resistance (@25℃) of 10kΩ are pretty common and cheap. You need to connect 3 of them in parallel. They already have a 1 meter long cable, so I did not need any additional cable. Putting 3 of these sensors will ensure an increase of injected fuel of 5% ~ 6% in the whole range of temperatures between -10℃ and 40℃. If you want to reduce it a bit, you can add another sensor (4 instead of 3), or simply put an additional constant 10kΩ resistor in parallel (you must buy it separately in an electronics store, it will cost few cents).
- Connectors (female and male): you can buy cheap connectors on Aliexpress, for just 9 dollars (see the image above). You can search the following keywords: 12162193, 12162195, 12162215. The below connectors better fit the sensor side connector (fixing points on the side), but the above ones will already do their job, so the below ones are optional.
If you want to download the full guide, please check at the following link: make_your_own_Booster_Plug_20181227