So, I've been reading up about this exhaust in the forums and I wanna make sure I'm reading this right before I make up my mind on which bike I want: If I go and buy a 2009 XB12Ss and throw a Drummer Original and a K&N then I can run a stock ECM without fiddling an entire weekend with the EFI and possibly ruining my new bike. I saw where KDFab states you can run the pipe w/o ECM changes, but what about a K&N as well (not an airbox delete, just the filter)?