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We test the MHD Stage 1 tune on my 340i B58 BMW and find out if it really is worth it ? See me put MHD stage 1 through its paces with 0-60,s up against the mppsk kit and the JB4 Tuner.. Will MHD come out on top??
#mhd #jb4 #bmw #mppsk #ultimatedrivingmachine #fastcars #competition #dragrace