Captain Bob
Supercharged
I put an underseat K&N on my completely stock 08 R3T. No noticeable change. I then installed TORS but still ran the stock tune the bike came with. Major difference in power. The motor woke up. Accelerating while at midrange felt good but a tad flat.
I then, using Tuneboy, remapped the ECU with the Triumph TORS tune and also opened up the secondaries 100%. Acceleration at midrange felt a bit better. I noticed however that after riding at sustained speeds for a while, the exhaust note would become quieter. Clearly the ECU was leaning out the mixture. If I were to head up a hill (put a load on the motor) and grab a handful of throttel a few times while under that load, the exhaust note would change back to its throaty sound. other then that, no discernable difference.
I think the "adaptive" ECU changes were always taking place but just could not hear it with the stock exhaust.
I then physically removed the 02 sensor, plugged in the 02 sensor eliminator, and also electronically shut it off with Tuneboy. Of course, no power change but...., that almost completely eliminated the ECU changing the mixture at sustained speeds. I say almost because, the ECU still changes the mixture but not at all to the extent it was doing before. I would say it is about 95% eliminated. I believe the other sensors are creating the changes based upon riding style at that particular period in time.
You can also always "clear adapters" with Tuneboy or implement a 12 minute tune to reset the ECU bringing it back to the throaty tune. Or...., just ride it hard and it will reset itself.
I have no decel popping, the motor pulls hard from the bottom to the top, roll ons from 70 -80mph are a hoot. I hear no pinging, so therefore feel the engine is running OK. I should (and will) get a spark plug reading to verify once the snow clears.
Only complaint, and it is minor, is that the throttle is a tad notchy at real slow speeds.