2015 wrx CAI system
 

im trying to find a CAI system for the new car that does not require special tuning to show improvement without altering AFR. ive heard that mishimoto, even though it is advertised as no altering of AFR, has to be actually tuned to get by certain rev ranges without alterations. anyone know who is right here? also are there any other good systems out there? will a CAI system void the warrantee? or will any system provide a warrantee on any damage done to the engine with a system in place. dinan does that for bmws.