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Old 10-27-2008, 12:32 AM   #1
toebotypera
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Default is the o2 in the exhaust manifold really needed?

can we bypass the o2 sensor in the exhaust manifold or is it really needed?
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Old 10-27-2008, 06:34 AM   #2
UkNuck
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100% needed - it is used by the ECU to control closed loop AFR. Don't mess with it.
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Old 10-27-2008, 10:41 PM   #3
toebotypera
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can I replace with a wideband o2 sensor from http://www.tactrix.com/product_info....ab6aa1c14570dd ?
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Old 10-28-2008, 08:56 AM   #4
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no, and ideally you don't want to leave the lc1 in all the time either. install it in a downpipe bung, tune, and then remove it until you tune again.
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Old 11-01-2008, 10:41 PM   #5
nelam
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are you better off sticking with the oem O2 sensor in the exhaust manifold, or is there another one out there that has a better reputation?
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Old 11-02-2008, 07:15 AM   #6
Subie Gal
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Quote:
Originally Posted by nelam View Post
are you better off sticking with the oem O2 sensor in the exhaust manifold, or is there another one out there that has a better reputation?
aftermarket sensors tend not to work so well (throw CEL/codes)

OEM is best in this case.
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Old 11-03-2008, 04:49 PM   #7
ciper
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You can safely remove the rear 02 sensor if necessary. The LC-1 is still fairly accurate when installed after the cats.

Quote:
Originally Posted by rkramer View Post
no, and ideally you don't want to leave the lc1 in all the time either. install it in a downpipe bung, tune, and then remove it until you tune again.
I don't agree. The sensor used with the LC-1 is an OEM part used in many vehicles and is meant to be installed and used as the primary sensor.
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