During a trail ride yesterday, it feels like the backfires became common ... performance was good ... I just had alot of backfire when I would lift on the throtte or going down hills with the engine braking a bit ... I will inspect for exhaust loosness and other causes but wanted to put it out here .... spark plug is newish (last few months, less than 200 miles).
Air cleaner is a Uni that I regularly clean especially after a trail dusty ride .... thoughts?