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Wondering if anyone has a C63 that has removed their secondary cats and ran straight pipes without a tune. I’m not the original owner and can not confirm or deny if the car has a tune on it already. However it appears to have a custom exhaust, the previous owner removed the secondary cats and resonators. They also managed to custom weld a set of what appears to be exhaust mufflers and tips from a E63 maybe a W212. In short I’d like to know if anyone has this kind of setup or similar and without a tune. If so, did they have any issues such as CEL or limp home modes, etc. This can help me some what gauge if my car has a tune already. I’ve had the car for roughly 3 years and roughly out in 20k miles with some spirited driving, I means it’s an AMG right.

Thanks again for any and all help.
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