Put on my Brocks Alien Head 2 3/4 today on my gen 5, along with the pcV (correct map from Brocks loaded). I installed the PAIR block off cap on the back left tube (only one back there) of the air box like it stated, removed the exup wires as well. Did not remove the exhaust servo, it's still plugged in. Also unplugged the o2 sensor, per Brocks instructions. Turned bike on, check engine light was on. Rode for about an hour, the yellow exclamation mark lit up, and my F M L indicators are now flashing. Any input I'd greatly appreciate it.