I just finished building and installing 2 O2 manipulators on my V7II. They're basically "fatduc" style - a simple voltage divider circuit.
Did around 200Km since installing them - the engine feels "rounder", less prone to hesitation in opening the throttle and smoother deceleration. Also feels like it's running a little cooler, but I have no way to measure this. No "check engine" light.
All in all - a very nice upgrade for very little money - bought enough components for building 4 of these puppies for about 30$ US.
Cheers
Did around 200Km since installing them - the engine feels "rounder", less prone to hesitation in opening the throttle and smoother deceleration. Also feels like it's running a little cooler, but I have no way to measure this. No "check engine" light.
All in all - a very nice upgrade for very little money - bought enough components for building 4 of these puppies for about 30$ US.
Cheers