ya now you're just tryin to be the big bad conversation ender. the wire mesh is so fine that oil and carbon deposits build up quickly depending on how fast and hard you ride and the type of climate you live in, creating different scenarios such as more humidity, barometric pressure, hot air, cool air, the type of oil you run. various things, so having it out can make a difference, but you cannot tell by the seat of your pants unless your silencer has a baffle in it, in which case you free up a lot of resistance to air flow. that's another advantage of aftermarket silencers, providing a straighthrough design, rather than baffles