Reply To: Stage 1 tune Great British Handcrafted Motorcycles › Forums › * New members – Introduce yourself here › Stage 1 tune › Reply To: Stage 1 tune 5 June, 2020 at 9:20 pm #5098 rickbiertonMember I can’t compare before and after as I had mine fitted during build. But any gain in BHP has got to be good on such a lightweight bike.