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I prefer BM3 because they are tuners and software engineers. the entire product is made and updated in-house. So you are getting the best tune and more importantly the best support.
the MHD team are not tuners, they are software engineers. they buy their off-the-shelf maps from third-party tuners. but then when you need support, you contact MHD who did not even create the map or ever claimed to know tuning.
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