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Old 11-07-2016, 01:40 AM   #1
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99 boxster

Ive read alot about removing my catalytic converters and replacing with bypass pipes as I have just got 4 different codes from
sec air
heat 1
heat 2
O2 sensor
If I remove cats will the engine light stay on and how hard to reprogram ?
I drive under 5000 a year but she is my daily driver
any thoughts appreciated..
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Old 11-07-2016, 03:03 AM   #2
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Removing the cats won't repair the o2 sensors.
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Old 11-07-2016, 07:36 AM   #3
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Quote:
Originally Posted by Chris Balady View Post
If I remove cats will the engine light stay on...
Yes.

Quote:
Originally Posted by Chris Balady View Post
...and how hard to reprogram ?
Very difficult.
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Old 11-07-2016, 10:18 AM   #4
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Chris,
Go to your local auto parts store and have them read and clear codes for you. If they won't do it, buy a reader (under $40 easy, some now under $20). Clear codes and see when they come back.

You can remove rear cats and replace with bypass.

Don't remove front cats. Just replace forward O2 sensor(s) if needed.
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