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o2/headers need help

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Old Mar 6, 2006 | 12:39 PM
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Default o2/headers need help

I just bought a set of hooker headers(used) and need some advise. I started pulling off factory stuff and notice I've got front and rear o2's, the headers have a place for the fronts(I guess) but the hooker y-pipe doesn't have a place for the rear. So I'm trying to figure out what to do. Anybody know what to do? The car is a 2002 SS
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Old Mar 6, 2006 | 01:20 PM
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Does the y-pipe have cats? If not, just get some o2 sims for the rear o2's or have the codes deleted. If there's cats there, any exhaust shop can weld bungs for the o2's to screw into. I guess you could eliminate the rear o2's even if you had cats if you want since all they do is tell the computer if the cats are functioning properly or not.
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Old Mar 6, 2006 | 01:21 PM
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You have 3 options 1) Buy a set of O2 sims to put in the place of the rear O2's 2) Unplug the rear O2's and live with the SES light or 3) Unplug the O2's and have the SES light tuned out.

Either way the rear O2's just verify that you cats are still good. I assume you have a ORY and do not have cats therefore don't need rear O2's. Hell, I a catted Y and still don't run rear O2's.
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Old Mar 6, 2006 | 01:27 PM
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Originally Posted by 02SS0384
You have 3 options 1) Buy a set of O2 sims to put in the place of the rear O2's 2) Unplug the rear O2's and live with the SES light or 3) Unplug the O2's and have the SES light tuned out.

Either way the rear O2's just verify that you cats are still good. I assume you have a ORY and do not have cats therefore don't need rear O2's. Hell, I a catted Y and still don't run rear O2's.
couldn't have put it any better - i also run a catted y without O2 sensors
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Old Mar 6, 2006 | 10:10 PM
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Originally Posted by jmm98LS1
Does the y-pipe have cats? If not, just get some o2 sims for the rear o2's or have the codes deleted. If there's cats there, any exhaust shop can weld bungs for the o2's to screw into. I guess you could eliminate the rear o2's even if you had cats if you want since all they do is tell the computer if the cats are functioning properly or not.
This is pretty much what I was thinking but wanted to make sure. No I don't have cats. So if I buy the sims the dash light will not come on or will I still need to go get codes deleted?
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Old Mar 6, 2006 | 11:46 PM
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You may still get codes due to the front o2s not switching as quickly as they did, you can get the vette rears (bosch 13111) they seem to help in some cases (tho not all) they have a stonger heater than the f body ones
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Old Mar 7, 2006 | 08:55 AM
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Originally Posted by 2K2WS6TA
You may still get codes due to the front o2s not switching as quickly as they did, you can get the vette rears (bosch 13111) they seem to help in some cases (tho not all) they have a stonger heater than the f body ones
The guy I got the headers from said something about the vette o2s from bosch, guess this what he was talking about
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Old Mar 7, 2006 | 12:37 PM
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keep in mind you might need extensions for the front o2s
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Old Mar 7, 2006 | 05:14 PM
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If you use the bosch you don't need the extensions, the wires are long enough to reach
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Old Mar 7, 2006 | 08:34 PM
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Thanks for all the advise on my install. Everything went together pretty quick, 6 hours by myself. SES light came on after about 15 miles of driving to check for banging, leaks. Everything cleared, it's very close to stock setup. Going to buy sims in the morning and check codes.
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