mine makes the exact same noises and you actually used the same sound alike situation as i do..(hard drive clunking)...From what I have read on the forums, this is completely normal and just the fuel injector working. I have about 800 miles on my redline now...sounds the same as the day I picked it up with 8 miles on it and have had no issues...i'm no car mechanic, but I am a skyroadster.com pro
Stephen