2004-2007 Cadillac CTS-V Performance Mods Discussion, ***super stock intake box modded*** in Cadillac CTS-V Series Forum - 2004 - 2007; I see this guy claims about a stock modded intake could be your
best bet and save $300!! But I ...
Mine has a "modded" stock intake, but I've yet to take it apart to see what the previous owner came up with. Claims he measured a 40 degree air temperature difference after porting the stock filter box and installed a K&N instead of buying a cold air intake kit.
I plan to take it apart in the next couple of days to see what is rigged up there.