03 Screw FX4 lean code

[rdm_01]

I'm getting lean codes on canned tow tune. I know this isn't right, but is there anything I can do other than not use it until I get custom tunes. I have the 5.4L, gotts mod, drop in k&n, and dual exhaust with a "H" pipe and flowmasters. Any help will be appreciated.

Thanks,

Rob