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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

o2 Sims?

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Old 10-27-2017, 01:20 PM
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Hey all, i've been searching for some rear o2 sims for my '96 lt1, can't seem to find any anywhere. Anyone know where I can find some?
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Old 10-27-2017, 04:12 PM
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They were banned a while back from what I hear. You will have to get the pcm programmed by a tuner that can take out the code from the pcm.
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Old 10-27-2017, 04:54 PM
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There is more to it than that if he has no Cats.
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Old 10-30-2017, 06:45 PM
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Originally Posted by Ed Wright
There is more to it than that if he has no Cats.
isnt it also neccessary to tune the 02 sensors out as well?
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Old 10-31-2017, 01:55 PM
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Originally Posted by platinum performance
isnt it also neccessary to tune the 02 sensors out as well?
Not for the rear O2's. The simms send a dummy signal back to the computer.
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Old 11-03-2017, 06:38 PM
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Originally Posted by Gangly
Not for the rear O2's. The simms send a dummy signal back to the computer.
Those sims don't take care of everything. Won't shut down COT Mode, nor post O2 sensor effect on A/F corrections. That is all in the calibration. The only correct way is proper calibration changes.
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