I contacted Jens from Booster Plug. He took 5 minutes to repply. Here is his responder. It may also help others:
The sensor position on your bike is excellent! You are right that heat from the radiator will rise and heat the sensor tip slightly when the bike is standing, but as soon as the bike is moving, the air (and the heat) will be blown backwards and the sensor will be reading cool air within a few seconds.
So I would recommend that you leave the sensor where it is placed now.
Only thing to mention is that you should make sure not to fasten the sensor directly to frame metal parts (you want it to read air temperature, not the temperature of hot frame parts)
All units are tested twice (once during production, and one more time before shipping) so it's very unlikely that the module is faulty. In fact, we haven't had a single non working unit in the +35.000 BoosterPlug's we have in the market.
Also, you would see a warning in the dashboard if the BoosterPlug (Or the AIT sensor was faulty)
So if you installed the BoosterPlug correctly and there is no warnings in the dashboard, the BoosterPlug is in working order and is making the air/fuel ratio 6% richer as designed.
But we know from experience that some people are just very good at adapting to the bike, so if you feel that there's little or no difference with the BoosterPlug, I recommend trying these two exercises:
- Put the bike in first gear, and release the clutch slowly without touching the throttle. With the BoosterPlug the idle will be much stronger, and you should be able to run the bike without applying throttle.
- Find a very tight corner and take the bike around it in first or second gear. You should be able to feel the much softer throttle response that is nowhere as "digital" on/off as before you installed the BoosterPlug.
These are the situations where it should be very easy to feel the BoosterPlug difference.