stupid question about headers

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Old Nov 13, 2008 | 11:41 PM
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I know this may sound dumb but I just ordered a set of Hooker longtube headers for my 2000 trans am 6 speed...do you have to have o2 extensions? some people are saying yes and others are saying no.....does it depend on the brand of headers wether or not you need the extensions?
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Old Nov 13, 2008 | 11:42 PM
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you either need to get the extensions or have the rear o2's tuned out
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Old Nov 13, 2008 | 11:51 PM
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so the extensions are for the rear o2 sensors..I thought they were for the front sensors...


Originally Posted by streetassasin
you either need to get the extensions or have the rear o2's tuned out
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Old Nov 13, 2008 | 11:58 PM
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you need the extensions for the front o2's and you need to tune out the rears.
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Old Nov 14, 2008 | 12:05 AM
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^^ what he said
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Old Nov 14, 2008 | 12:23 AM
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You need extensions for the fronts, and have the rears tuned out. You can also buy a set of rear O2 simulators if you can find them.

2 24" extensions will work fine. If you're broke, you can cut/splice them longer, but that's not something I would suggest.

Another option is to buy two Bosch #BS13111 oxygen sensors. These have longer harnesses on them and work great. They have also been rumored to have stronger heaters and work well on cars with LT headers.

http://rep.speedycarparts.com/parts/...gory=C&dp=true

That place used to be the cheapest, now they look like $70 each.



Originally Posted by streetassasin
you either need to get the extensions or have the rear o2's tuned out
Pay no attention to above jackass poster.

Sorry Thomas lol.
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Old Nov 14, 2008 | 12:29 AM
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thanks guys....any problems if you don't tune out the rear o2 sensors besides getting a check engine light?
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Old Nov 14, 2008 | 12:32 AM
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no it just wont pass insp. with the light on
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Old Nov 14, 2008 | 12:43 AM
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Probably a stupid question but what do you guys mean by tuning out the rear o2s?
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Old Nov 14, 2008 | 12:58 AM
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Originally Posted by RedneckTA
Probably a stupid question but what do you guys mean by tuning out the rear o2s?
Edit the computer programming. Requires HPTuners, EFILive, or LS1edit. You basically have to change the settings to say "no error reported" for when it runs through its checks.
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Old Nov 14, 2008 | 01:07 AM
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So is that pretty much telling the comp that the rear o2s no longer exist or what?
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Old Nov 14, 2008 | 01:16 AM
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Originally Posted by RedneckTA
So is that pretty much telling the comp that the rear o2s no longer exist or what?
No, it just will not throw a fault (check engine light) when it senses that they are not there.
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Old Nov 14, 2008 | 05:27 AM
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You will need the 02 extensions or you can buy the corvette's long rear 02 sensors and they will work very well. I would personally buy the corvette sensors and be done with it. I don't like to use the extensions.
Just like they said above either take the car to some one and have them tune out the rear 02 sensors or use simulators.

The part number for the corvette bosch 02 sensor is 13111 you can get them from auto zone for around $60 and the wires on them are plenty long.

Last edited by bigfatls6; Nov 14, 2008 at 05:32 AM.
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Old Nov 14, 2008 | 11:28 AM
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Originally Posted by RedneckTA
So is that pretty much telling the comp that the rear o2s no longer exist or what?
In a nutshell yes.

Originally Posted by GMCHammer
No, it just will not throw a fault (check engine light) when it senses that they are not there.
He's talking about if they are tuned out.

The computer will go over its normal checks, but it will just ignore the fact that it's missing. The SES light will not come on. The setting says "No error reported". So it recognizes the problem, but doesn't do anything about it.
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