I just bought a 03 vert recently and am starting to mod it and strip the existing mods off of it right now. My question is if I add just the JLT CAI, SLP loudmouth exhaust, and SCT2800, can the XCAL2 tune the car without a dyno tune for the time being? I'm getting the XCAL2 b/c Sutton is closer to my house, than Speed INC is. I have purchased quite a few things from Speed INC before (had 00 targa vette, and 99 WS6), and will surely continue because they have some of the best prices. I am not to used to using a handheld flash tool, because I also had LS1 edit licenses for all my tuning issues, hence the question. Thanks for all your guys and gals help.