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12-04-2011
I need some recommendations on what to do with a cutout i bought for my 2007 Grand Prix GXP. I know a lot of the people who have done this to a gxp takes out the cats but i need some help on what to do with the o2 sensors. The only other place to put it is after the res. but i find that to be pointless. Just some help with the o2 sensors for deleting the cat would be appreciated! Thanks!
12-04-2011
Seems like you're cramming a lot of stuff in a 4' section.
I'd go catless, put the cut out in right after the curve on the downpipe after the firewall, and relocate the o2 sensors if necessary.
12-04-2011
Where would i relocate the 02 sensor to without getting a check engine light
12-04-2011
The cutout itself is pretty useless....just out it where ever. Your gains will be minmal either way
12-04-2011
i wouldnt worry about a cutout unless you have other stuff done to it as well. tune the o2 sensors out and you dont have to worry about it period. there is only one cat. cut it out.
i went catless and i dont have mufflers either. just the resonator. sounds phenominal and only cost me 40 bucks.
12-04-2011
i still have a cat for legal reasons here in canada, but my cutout is right b4 it and it sounds amazing here is a clip check the video out 2005 grand prix GXP turbo - YouTube
in my opinion sounds really good... i will take a picture of were is is tomorrow and can show you
12-04-2011
Without a cutout, I would go this route.Originally Posted by f3racer
ASSuming you can do it and pass emissions...but with a tuner you can set rear-o2 codes to "no report"
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