I have an 06 Suzuki Hayabusa with about 30,000KMS on it, BMC Air Filter, Full 4-2-1 Yoshi Exhaust, PC3 tuned pretty will and a full time PLX Wideband and Gauge so I can monitor AFR.
I've changed the plugs in it about 10 days ago with NGK CR9EIX Iridium Plugs. Old plugs looked good actually.
I've...