If your exhaust is still stock, then you won't have to. It's only when you change both stock air cleaner and exhaust that you have to add a fuel processor.
No need for a dyno if its just the air cleaner.
My stepping stone to what I'm riding now.
Suzuki GSX250 '82
Suzuki GSX-R600 '00
Vulcan VN1600 Classic '06
Fitted: tachometer, genuine windshield, K Drive hard bags, upgraded Meanstreak clutch spring with Judges washers, Cobra Speedster Longshots, Dobeck TFI controller, Chucksters air filter plate, Mustang seats with drivers backrest.
Up coming items: volt meter, oil and temp gauges.