Link Pipe and CEL

M2sday · 07-31-2020, 01:39 PM

Apologies if this has already been answered, but I haven't had any luck searching within the forum. For US spec cars (without the OPF), will installing a link pipe (Akra, AA, etc.) without an ECU tune trigger a CEL code or limp-mode? Looking into installing a full cat back system, but I don't want to tune the ECU for warranty reasons. If anyone in the US has done this, would you please let me know your experience? Thank you in advance.

DriverDaily · 07-31-2020, 01:56 PM

Not on US spec cars. IIRC, there are no o2 sensors after the primary cats. You can do whatever you want to the secondary cats and the computer won't know.

2020M2Competition · 07-31-2020, 04:36 PM

As mentioned above, as long as you leave the factory downpipes alone (which contain the primary cats and O2 sensors) you shouldn't have any problems or require a tune with a full catback

I have been running the Akrapovic Evolution catback (link pipe + slip-on) without any issues on the factory tune

07-31-2020, 01:39 PM	#1
M2sday Registered 0 Rep 3 Posts Drives: 2020 M2C 6MT Join Date: Jun 2020 Location: SF Bay Area iTrader: (0)	Link Pipe and CEL - US Spec M2C Apologies if this has already been answered, but I haven't had any luck searching within the forum. For US spec cars (without the OPF), will installing a link pipe (Akra, AA, etc.) without an ECU tune trigger a CEL code or limp-mode? Looking into installing a full cat back system, but I don't want to tune the ECU for warranty reasons. If anyone in the US has done this, would you please let me know your experience? Thank you in advance.
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07-31-2020, 01:56 PM	#2
DriverDaily Private First Class 228 Rep 198 Posts Drives: M2 Competition Join Date: Sep 2019 Location: Texas iTrader: (5)	Not on US spec cars. IIRC, there are no o2 sensors after the primary cats. You can do whatever you want to the secondary cats and the computer won't know.
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07-31-2020, 04:36 PM	#3
2020M2Competition Lieutenant 429 Rep 433 Posts Drives: Yes Join Date: Oct 2016 Location: Florida iTrader: (1)	As mentioned above, as long as you leave the factory downpipes alone (which contain the primary cats and O2 sensors) you shouldn't have any problems or require a tune with a full catback I have been running the Akrapovic Evolution catback (link pipe + slip-on) without any issues on the factory tune
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