Yes you can re-map when you install a slip-on. I already have my slip-on and my PCIII, i'm just waiting until I break the bike in first before I install them. And yes you will also gain more from the slip-on if you install the PC. Results very, but you will notice some change.
Let other people be right sometimes...it soothes them for being nothing else!
My friend just put a Yosh carbon half system on that eliminated the set valve on his 1000 and he had noticeable gains after remapping. Hes got the PCIIIr, but he is using yosh maps. We are also at higher altitude so it pays to remap up here. When the weather warms up we will dyno it again and Ill let you know the differences with the maps vs. stock.
YES YES YES, You will need to Map it unless you want to deal with the famous Suzuki ECU problems that come with new cans. Trust me I love Suzuki but they don't handle change to well Computer wise anyway. The mechanic for Goleta Suzuki told me he has never had a harder bike re-map after slip-ons or new cans (Gsxr-600). Could have just been that bike in general though.
Thanks guys. I'm still up in the air about which bike I should choose, the yellow Kaw 6r or go fuel injection with the gsxr6. I'll figure it out soon. I'm thinking having fuel injection would be really nice, but I'm a Kaw fan at heart. Hard decision that I'm gonna have to sleep on for a few more nights but that's half the fun./images/icons/smile.gif