Thanks for your opinion, Arctitude,

Concerning the exhaust, I put a true dual and the electrical motor and his wiring stay on the bike and it's ride, I think. :-?
I agree with Dogols, we have only two wiring on the solenoid. [smiley=xyxthumbs.gif]
It's means that we have only a simple connection without return to the ECM. It must be possible to disconnect the connection and to change the backplate without consequence. :-/
Sure with a true dual and exhausts (same Oval slip-ons) and a big sucker, we need to change the MAP.
Information : The active system operate till 3500 rpm for the noise and the emission regulation.
Between 0 to 3500 rpm, the opening is progressive and depends of the throttle.
More 3500 rpm, it's all opened and we have a similar HD sound

? (say the dealers..) :-?
Best regards
Jacques