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Engine Mods: BM3 stage 2 OTS w/ flex fuel, e50, AA downpipe, akrapovic exhaust, wagner intake manifold, liquimoly 5w30 special tec ambient temperatures 80F and sunny, 20-30mph winds. Last weekend I was at Las Vegas motorspeedway outside track. I shared my car with my brother for his first HPDE...

Long time reader and wanted to give back to the community. I have a BMW z4 m40i that I occasionally track. I notice my stock brakes fading. The easiest answer was to switch out to more aggressive pads and higher temp fluid, but I disliked the idea of having to swap out pads between track and...

Hi everyone, new to the forum, but active on Bimmerpost. Unfortunately the mod scene for the z4 is black badging and window tinting with that crowd. anywho here are the facts: -2020 bmw z4 m40i -BM3 OTS stage 2, e30 + 91ACN fuel - AA dp, exhaust, intake. installed BM3 flex fuel kit earlier...