headers/extractors = more noise?

[headhoon]

Hi guys, its been a while since my last post but I'm looking to put some headers on my 02 LS1 Monaro. It currently has a Coby cat back medium and I'm wondering if adding the headers will improve the sound as well as power, or can this only be done through changing the cat back part? thanks

[essexmonarovxr]

Im told it will be louder and a deeper sound. I have a LS2 VXR and im getting my new headers and 100cell CATs from OZ tomorrow i hope and Mark at RapidGB is fitting them on for me.
So ill let you know how it sounds.

[headhoon]

Thanks man, do you have cat back already?

[essexmonarovxr]

Yes i had mine fitted in January 08 and it sounded really nice but i dodnt get it remapped. But the remaps being done once the new headers are on this week to take advantage of the full system.
You should order the hears and cat's from www.capa.com.au thats where i got mine from.

[stigmundfreud]

With headers the noise is quiter in cabin but gives more of the v8 sound outside.