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i went to the same place comparing RR from basis and after mods , i gained 13bhp at the wheels from one condition to the next - mods included RS tuning remap , inlets matched , 182 manifold , sports cat , prospeed exhaust .
cant really work out the high figures at the fly , i mean are you really losing that much from the fly down to the wheels .?
my fly to wheels was only 18bhp loss , urs close onto 50 :dapprove: