When i turn the ignition I get this small buzzing sound (hard to describe, its like a fast ticking sound up close to the intercooler) but it only last for about 2 or 3 seconds. any ideas?

are you sure it's not a relay?

its the bac valve, its normal

normal? k sounds good, I just dont want to be around another electrical fire like the last one my buddy caused. He did a awkward swap and didnt take the time to realize the difference in the alternators and blew his battery up while we were going down the highway.