Down pipe value
Does any forum member have any dyno info, such as before and after results, of what a good set of DP's add in the way of rwhp? I know that when I did this for my F10 it was good for about 35 rwhp.
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2021 M340i
2020 X3 M40i - her car
2019 M5, AW, DP's, MSR CAI, BM3, SOLD
2020 Chev. ZR2 Bison truck, Daily Driver
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