04-19-2024, 09:03 AM | #1 |
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MAD primary downpipes
MAD primary downpipes for F90 M5. These are the standard version, not the newer “Fatboy” version. Ran for about 2 years. Wrapped, but am happy to remove the wrap if desired. In southern NH. Local pickup preferred. $150 Last edited by pbonsalb; 04-19-2024 at 09:24 AM.. |
05-13-2024, 02:13 PM | #2 |
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05-13-2024, 03:56 PM | #3 |
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No. Bought a used set of Savu, which are the same as Keller but in stainless rather than titanium. They stay 3.5” diameter until 1-2 inches from the end. I don’t know how much this helps over the typical downpipe but was in there anyway swapping the turbo manifolds to Supersprints. Not sure how much they help, either. These might be mods you need a built motor to take advantage of, but in theory, they should help efficiency and that is never bad.
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