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M3 has an electric assistant vac pump, same as what is fitted to several current model cars like the Cruze turbo. I considered plumbing in an aux pump and i probably will do it if the vac pump packs up. I've got all the means and tools to replace the mechanical vac pump on my motor but it's easier to just setup an electric one. Hella makes two versions. The second version is designed for electrics and hybrids so the pump is the sole source of vacuum whereas the more common version is suited only for supplementary use.
1M obviously has the same engine driven vac pump as an N54/N55. I really dont think vacuum strength or supply is my issue. Both 1M and M3 have a very similar brake feel/response. Im looking into it but i hope it isn't software and DSC module differences. After all, we will never get MDM... M3/1M uses a different DSC module
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