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check engine light after tune

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Old 10-20-2019, 05:51 PM
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CLS400-3"downpipes cls63 exhaust and bbk BMS intake AMR rv3.1, 12.1@119mph 1.9 60'
check engine light after tune

I posted in here since there is more traffic. I recently tuned my cls400 to amr v3.1. I have catless downpipes and cls63 amg mufflers. This tune required shipping in ecu.
Once i installed the the ecu things were perfect for about 20 miles or so, then i got the check engine light po420 and p0430. I was informed that they no longer tune out the o2 signal due to federal laws. Wish i would have know that before i sent in the ecu. Any members recently tune and have any issues? If so, what o2 simulators were used? I also asked for info on that but have yet to hear anything. Thank you in advance
Old 10-20-2019, 09:12 PM
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2018 C43 AMG Brilliant Blue Metallic
That is bad news for the tune crowd.... One of the reasons people go the tune route instead of piggyback is to remove CE

Is this the same on c43 guys?
Old 10-20-2019, 11:16 PM
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PM'd you to show what I did.
The following 2 users liked this post by b6tbfmp:
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Old 10-21-2019, 07:46 PM
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CLS400-3"downpipes cls63 exhaust and bbk BMS intake AMR rv3.1, 12.1@119mph 1.9 60'
Originally Posted by b6tbfmp
PM'd you to show what I did.

Appreciate the info...Anyone else have any issues? Thanks in advance
Old 05-27-2021, 07:09 PM
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2018 c43 amg
Im throwing the p2099 code after getting the rv3.1 tune with catless downpipes. Any information about this on my c43?

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