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Hi everyone, I have a 2017 540i. The car is bone stock but I want to do some mods to it. I was thinking of the JB4 chip tune, down pipe, Remus exhaust and BMS intake. I was playing around with the idea of a upgraded charge pipe, as I hear it helps with throttle response.
What’s a good set up for a down pipe that won’t leave the car smelling like fuel?
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