2004-2007 Cadillac CTS-V Performance Mods Discussion, GM OEM intake tube - help identify a part, please! in Cadillac CTS-V Series Forum - 2004 - 2007; Hey,
Was about to install a Lingenfelter CAI intake tube on my new Lingenfelter kit, but was stopped by the ...
Re: GM OEM intake tube - help identify a part, please!
It is part of the positive crankcase ventilation (aka PCV) system. The intake tubes without it are for an LS6. You can drill a hole in the new intake tube an insert a fitting for the hose. (I used a threaded air hose fitting, when I adapted an LS2 throttle body to my LS6 setup.)