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I recently purchased a used '97 CBR900RR that has a Two Brothers full exhaust, K&N filtercharger and was rejetted.
The question I have is that when I come down in RPM, especially from say 7K - 2K quickly, the bike seems to backfire. It doesn't bang, or throw flame, it just crackles.
Is this normal, or is it a sign that I might have the wrong jetting in the carbs?