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Jan 13, 2007 | 03:01 PM

Spinmonster

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Header install question

When running without cats, do I still install the rear O2's and just delete the codes using HPtuners or can you leave the rear O2's off the car and delete the codes?

Jan 13, 2007 | 03:05 PM

RA4926

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you dont have to install rear 02's to delete the codes.

Jan 13, 2007 | 07:00 PM

carado1984

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From: harrisburg, pa

if youre running without cats then there arent o2 bungs in the pipe so you cant plug them in.. just disconnect them and wait to have them tuned out..

Jan 13, 2007 | 07:09 PM

TheBlurLS1

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Quote:

Originally Posted by carado1984

if youre running without cats then there arent o2 bungs in the pipe so you cant plug them in.. just disconnect them and wait to have them tuned out..

Lots of ORY have bungs there anyway (for why I don't know).

You can plug them in, screw them in, and let them read. As long as the codes are deleted, you will have no problems. I didn't have any plugs for my Kooks ORY (with bungs for rear O2's), so I did just that.

Worked out nicely when I picked up my wideband. I simply screwed it into one of the bungs.

Bottom line, when the codes are deleted, it doesn't matter what you do with the rear O2's.

Jan 13, 2007 | 08:51 PM

Azrael

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Quote:

Originally Posted by TheBlurLS1

Are you sure those aren't bungs for wideband tuning?

Jan 13, 2007 | 10:28 PM

Spinmonster

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Lots of good replies, thanks.....I have HPtuners and its a 2005 corvette with AR headers. I will mount the O2's and delete the codes for the lack of cats.

Jan 14, 2007 | 01:27 AM

TheBlurLS1

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Quote:

Originally Posted by Azrael

Are you sure those aren't bungs for wideband tuning?

Not sure, but it's a possibility. The ones after the cats in the catted systems are fairly worthless I believe. Using O2's even with cats will often set off the light anyway, AND you shouldn't put a wideband after cats. (I don't think).