Compressor Question

[Draggn66]

First off I wasn't sure where to post my question so if a Mod wants to move it that's cool. Ok.....my compressor is a 6HP with a 30 gal tank. Damn thing only puts out 7.7 CFM @ 40 PSI or 6.0 CFM @ 90 PSI. From everything I've found that isn't good enough to do the paint on my truck. Anyone disagree with that? Is there any way to modifiy this compressor to "bump" it up to a better CFM? Really don't want to get a new compressor since this one has worked fine for everything else and this will be the only "painting" I do with it. I haven't bought a paint gun yet till I get this compressor thing worked out. ANY advice or info would be much appreciated.