Subject: Does surface finish have a relative influence on how air flow behaves?

I own a small high performance engine business.  One of the modifications 
performed is altering the shape of the ports that allow air/fuel mixture to 
enter, and the exhaust produced as a result of combustion.  There is a 
tremendous amount of controversy as to what influence the surface finish has on 
an air/fuel mixture.  For our purposes here, lets limit gasoline as the type of 
fuel.  The argument is that a highly reflective, polished surface allows more 
volume.  The opposition suggests that a slightly "textured" finish allows finer 
atomization of the mixture and results in more efficient combustion.  I have 
spoken at length with an engineer from boeing, his thoughts on the matter were 
directed towards the idea of boundry layers and their influence on air flow.  
Any help in this matter would be greatly appreciated!  
Sincerely,
Chad Dixon,
Engine builder.

Re: Does surface finish have a relative influence on how air flow behaves?