Thread: Becker Headers +15rwhp / +8rwtq Dyno results inside
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      06-16-2019, 06:40 AM   #34
burnrbr
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Drives: 2022 M3 Comp xDrive
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Quote:
Originally Posted by darkbmw View Post
the problem i see with the headers are the x pipe and headers are not 3 inches.
The specs seem to say otherwise. What size are they? Please share your source.
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