hey everyone, i bought an 03 zx-6rr with a full hindle exhaust and powercommander 3 usb. i didnt like the way it sounded and wanted some more low end so i took the packing out, it sounds good but dosnt seem to have the pull toward the top like it used to. it used to pull like crazy from 10-15k rpm now i have more midrage through 12k rpm and it seems to fall off after 12k. its still fast, i was wondering what other tweaks i might be able to do, i was thinking a bmc filter and maybe adjusting the map. im not sure as to what map the bike is running since i bought the bike used from the dealer. Any help or suggestions will be greatly appriciated!!!