Gents, This question is regarding my TFI, and I have the one with the LED lights, not the pots. I remember Glider saying that the Mode #1 (the single green LED light) setting that sets how much fuel is used during normal cruising "can be backed down considerably" to increase mileage. I took mine down 2 LED lights. Is that OK, or too much? Could I back them down even more? Also- just FYI for those on here that might have this issue... I also got rid of the popping on decel by increasing my Mode 4 LEDs to ALL THE WAY to the right, as per the shop's recommendations. Mode 4 is the amount of fuel added on decel, and apparently the normal Stage 1 setting recommendation for the TFI does not allow enough fuel to be added to free-flowing pipes like my Rineharts. That seemed to do the trick. Just FYI for everyone.