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-   -   What kind of exhaust set up sounds good on 4.4 ? (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/85797-what-kind-exhaust-set-up-sounds-good-4-4-a.html)

Professor 01-31-2012 09:55 AM
will adding just an xpipe cause any cel lights or drone in the cabin?

TQ2K 01-31-2012 02:58 PM
Quote:
Originally Posted by Professor (Post 863928)
will adding just an xpipe cause any cel lights or drone in the cabin?
Replacing the resonator with an x-pipe and keeping the stock exhaust will(at least in my experience).

mattkins99 01-31-2012 03:46 PM
Quote:
Originally Posted by TQ2K (Post 863986)
Replacing the resonator with an x-pipe and keeping the stock exhaust will(at least in my experience).
What was the error? \

The O2 sensors are upstream of the resonator and there are no downstream sensors that I know of.... O2 seonsors don't check for backpressure so what sensor was tripped?

Professor 01-31-2012 03:46 PM
great.. well I don't want the headache of a CEL light.


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