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I feel your pain, but there's a place for everyone to gain knowledge from other's successes or mistakes.
I am here to share and gain knowledge about performance improvements; what works and what doesn't. Burbles and aftermarket heat generating air filters for sound does not correspond to improved performance.
I have a 2014 M5 CP with just a BM3 Stage 1 93 OTS, charcoal filters delete, everything else stock. MPS4S tires (11.40 ET @ 124.53 mph), with stock plugs and coils. 67K miles; No issues at all. I will change to NGK plugs soon, and try again. I expect a low 11's.
Has anyone tried the BM3 Stage 1 93 BETA?
What was the outcome compared to the original BM3 Stage 1 93 OTS? If possible HP, Torque, 1/4 mile times would be great.
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