He is bubbling, like a sports exhaust heard more in my Honda petrol to ... not bad but not as expected ... the installation is easy because the whistle can be rotated, it may be that it is not correct and the whistle still is achieved after I experiment a bit but it is also good.I but guess a loss of power because the exhaust yes is almost sealed. Will things even test a few days and I then again come out here ... Having the flute was with me just a few days for fun on it, of a seriousness you can not go out on the purchase of course, am for each joke: Addendum