Aoa all hope everyone is fine I am running 3b new with 5speed gear in bj70 RKR my engine give blow from oil cap yes it's slightly weak my issue is its good on offroading and on straight road as i achieve the speed upto 140km/h on moterway but when inclined start even on moterway the rkr losses power and from 100 to 80 then to 60 50km/h specially on naran side and even on hazara moterway and yes the black smoke from silencer increase as i go upside like on murree expressway etc ... Kindly if anyone dignose the issue for me better to replace with 1kz or keep this one with modifications
