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Downpipes without tune

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Old Dec 23, 2020 | 08:36 AM
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From: ILLINOIS
2014 E63S
Downpipes without tune
Hey all, so I just picked up a set of used capristo catless downpipes for the e63s, would I notice any improvement or side effects of running the Downpipes without a custom tune?I know it will be slightly louder and I'm assuming faster spool due to less restrictions. Also am aware about the o2 code which I got spacers for
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Old Dec 23, 2020 | 09:45 AM
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Thats what I am running now , no tune, but the spacers wont work. They may stop the p0420 and p0430 codes ,but you will still have o2 sensor heater codes . Car does feel stronger with the catless and sounds better .
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Old Dec 23, 2020 | 10:03 AM
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From: ILLINOIS
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Originally Posted by sabredog
Thats what I am running now , no tune, but the spacers wont work. They may stop the p0420 and p0430 codes ,but you will still have o2 sensor heater codes . Car does feel stronger with the catless and sounds better .
With the heater codes, are they shadow codes or will you actually get a light on the dash?
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Old Dec 23, 2020 | 11:29 AM
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A light on the dash. I just clear it once a month to make sure nothing else is acting up. I tried everything except a tune to get it to stay out and it just keeps coming back,
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Old Dec 23, 2020 | 02:48 PM
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Not meant to be inflammatory - why would you not run a tune if you are running hatless?
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Old Dec 23, 2020 | 04:27 PM
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Originally Posted by cotmfk
Not meant to be inflammatory - why would you not run a tune if you are running hatless?
I was able to buy a set of local dp for dirt cheap, so have those now
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