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E36 M3 (1995-1999)

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Old 09-09-2010, 09:42 PM
Benjamin513 Benjamin513 is offline
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Location: Cincinnati Ohio
Join Date: Sep 2010
Posts: 1
Mein Auto: e36 M3
Cat delete

I've heard many different opinions about losing the cat in a e36 m3
will it be worth the money to buy the o2 sensors? how much power will it gain with a cat back exhaust? THanks
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Old 09-13-2010, 05:12 AM
rrsperry's Avatar
rrsperry rrsperry is offline
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Location: Maryland
Join Date: Oct 2003
Posts: 485
Mein Auto: ///M3 sc
Which O2 sensors? The front ones yes. the rear ones only monitor the function of the cats. They rarely go bad... no reason on earth to remove the cats on a street car. Replace them if they are bad.

How much power from a catback? Almost none. Weight savings are another story.
No matter where you go, there you are.
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