91 performance tune vs 91 performace CAI Tune

[sparechg]

U7135
stock 2010 challenger srt 8

What's the difference? Which one should I use?

[mikel]

Do you have a CAI (Cold Air Intake)?

[Charger250]

The basic idea of the CAI tune is because a quality CAI that works will lean the tune, and require adding fuel. Basically if you have a CAI, use th cai tune, if you dont have a CAI dont use the CAI tune.