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Thread: 02 sensors
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07-04-2010, 12:52 PM #1
02 sensors
So I got set of the ebay headers. I am in the middle of buying the other parts for the install. My car has 119k miles on it. It still had the stock fuel filter on it. So I know it still has the stock 02 sensors. Should I go ahead and buy the corvette ones to replace or would I get away with just exentions
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07-04-2010, 01:27 PM #2
Get the Bosch 13111 sensors. No extension harness required.
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07-04-2010, 01:47 PM #3
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07-04-2010, 01:50 PM #4
Just 2 since I won't have back ones
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07-04-2010, 02:14 PM #5
The front O2 sensors (2) are what control closed loop fueling. The rear O2 sensors (also 2) simply let the PCM know if the catalytic converters are working properly. Most people with LT's and offroad Y pipes (or even catted Y's, like me) delete the rear O2's in their tune so as not to be hasseled by a check engine light.
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07-05-2010, 10:12 AM #6
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So if i get it tuned by frost after replacing my full exhaust, i dont need them replaced or extentions?
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07-05-2010, 11:16 AM #7
You still need your front 02 sensors because they control your air to fuel ratio. You need 02 extensions for your front ones because when you put headers on it pushes your 02 sensors back to far
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07-05-2010, 02:14 PM #8
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07-06-2010, 05:26 AM #9
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So its either 140 for the 13111s or 50 for the extensions. Can i use the O2s that were already in my car and just get the extensions?
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07-06-2010, 06:42 AM #10
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07-06-2010, 08:49 PM #11
Replace them trust me I have seen alot of people take the cheap way out with extensions and a few weeks later ses light for 02. BTW the bosch sensors are ^5 at pep boys
1998 Trans Am 85k miles.
Bolt ons, MS3 113LSA cam, Circle D Stall, Tune, Modified WS6 style hood, Full Suspension, 6000k HID's, Clear Side Markers w/ Leds, Led 3rd Brake Light and 18" AR Staggered Killer Wheels w/ BFG KDW NT's.- Weekend Toy/DD
02 Trailblazer -Sold
09 Ram 1500 CC - Sold
09 Cobalt SS/TC - Sold
13 ram 1500 LoneStar CC 4x4 - Magnaflow, K&N,and more to come-DD/Toy
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07-07-2010, 12:29 AM #12
All I did was plug my o2's into the rear and then swap the wires at the PCM one bolt a couple clips and then you simply swap the low volt wire from rear to front and high volt same thing. Not sure off the top of my head but I think you swap 25-26 67-68 and I done remember the other two I can look it up if you'd like. I haven't had a single prob since I did this it just makes the rear o2 plugs work for the fronts and the fronts work for the rear. But I deletet my rears so there was no need for them. I figured I would put them to use and not need to buy the extensions. I have my buddy mike to thank for the idea!!!
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07-07-2010, 05:45 AM #13
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How much are they at Pep boys?
Well my firebird that i wrecked had 89,XXX miles and they were fine still.
Mine only has basically 78,000 by the end of the week
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