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  1. BMW 4-Series Forums General Discussion
    Hi all, I have a 2019 BMW 440i Grand Coupe that I have tuned with MHD Stage 1. The upgrade in horse power and throttle response is awesome. I notice that cruising at about 75 to 80mph at less than 2000 rpm, I feel these micro-hesitations. The tachometer needle doesn't move, it's just...
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