i have the airraid and it looks and sounds great.
i have talked to several tuners and they all tell me not to even think of running with out the venturi. even with a tune for it... i have heard a few reasons and they all come down to too much airflow.
My current SCT tune wouldn't allow for removing the venturi as you have said but I have cams and a custom dyno tune going on mine tomorrow.The tuner says its OK to remove the venturi from my Roush model with these new mods , if it works out i'll let you know.
2005 Screaming Yellow GT Convertible -
Saleen Super Shaker Super Charger
Steeda Sport Springs,Pro Action struts and shocks,pan hard bar,upper strut mounts and Tri-Ax shifter ,Aluminum DS,FRPP 410 ,20" wheels
Custom 94 tune by Steeda.ca FRPP Hot Rod Cams,62mm throttle body,Kooks LT