09-02-22, 09:40 PM
I'll throw this into the debate. I've had the Fazer now for 8 years, I had a PC5 fitted and set up on a dyno to maximise performance, Scorpion system and decat link pipe. I still found (a common problem I believe) that when closing the throttle from wide open, then opening it up again, the response time was not immediate, possibly more noticeable to me as I do several trackdays a year on the Fazer. However, the last time I filled up, I sought out and used BP Ultimate. Although I have not changed anything else on the bike, the problem has 95% disappeared, and now picks up smoothly from closed.