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      02-16-2021, 09:59 PM   #8
F87source
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Drives: Bmw M2
Join Date: Aug 2018
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Check the tmap sensor on the charge pipe, if there is a Y-harness it has a piggy back. Then take a look at the down pipe if you can (you can kind of see it from the passenger side engine bay when you look down beside the coolant tank area) see if there is an extra metal thing connected to the o2 sensor that is furtherest back towards the back of the car - that would be an o2 sensor spacer. If not you most likely have a tune or else you would have gotten a check engine light from the high flow cat, unless this particular car is not sensitive to high flow downpipes.


Overall those are some good mods, congrats on the car.
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