All I can say is WOW.....So, as most us know..the Stock pipes make the scout 60 sound a bit tame to say the least. I decided to swap out and put on a pair of Crusher Maverick slip-on's. (yea she only has 400 miles on her but I couldn't resist) What a difference. Not wake up the neighborhood difference, but a difference none the less. No mapping needed, just swap and go.