We did the stage one on my 2013 with EFI
I have NOT removed the AIS
I am not convinced that the AIS
is not necessary for a FI R*.
I have very little popping on decel
we did not remove the outer cone as described in the tech articles, for one thing on the 2013 exhaust it is not shaped the way it is shown in the tech article. we drilled through it, through the plates behind it, and since we already had a very long drill bit for drilling our stryker exhausts, I saw Toby playing with that too.... LOL not sure what exactly he drilled through deeper in but the exhaust sounds nice, The bike runs fine, it seemed to run a tad cooler in fact, the airbox is cheesed as well, tho I am still running a stock air filter. When it is time to replace the air filter, will put in a k&n filter.
I like the way she sounds now, it will do until she is paid off and I can save up for an exhaust system.