@mpak Can you expound on this a bit? I was considering an air filter upgrade but I've read conflicting reports, ranging from no real change to claims like yours. Not asking you for dyno charts, just your honest feedback, thanks!you should change air filter too, i put dna on and the bike transformed.
I purchased a nearly-new 2018 Street Twin with the US spec Vance & Hines slip-ons and no baffles. So I've never had the experience of comparing before and after, but I thought it would be interesting to do so.It seems that most people opt to fit the US spec Vance & Hines silencers and then remove the baffle (because with the baffle fitted they're quieter than the standard silencers and they don't sound as nice as the standard silencers).