Why remove the secondaries when with Tuneboy you can set them to open to 100% the moment you shift into first gear? Mine has been set up this way for three years. To prove it to myself I removed the k&n's for cleaning and with them off started the bike and slipped it into first. The secondaries open completely and there is no way they obstruct airflow anymore than the bar that they are attached to. So why bother removing them? You will need TB anyway if you want to truly bring the potential out of the r3. I also run a PCIII since I haven't been able to find anyone capable of dyno tuning with TB.