laguna2s2k

New 06, 1800 Mi., and not really sure how concerned I should be for a new noise (past 300 MI.) Hard to explain, but am getting a rattle/dare I say slapping/Tapping sound(not valve, something lower-end or maybe trans). Its not dramatic, but quite noticable to me. Between 1800-2300 rpm as Im feathering out the clutch, in a normal casual light to light traffic. I cannot replicate the sound with just clutch in, and cannot replicate it, clutch out (in any gear), any rpm, any load. No power losses that I can tell! It seems to be at its worse feathering in reverse out of a parking spot. Most noticeable cold, less up to temp., and after a run with Delaware Valley Members (quite spirited for 50 mi.!) It actually went away completely for 2 days of regular driving! Then started again. The car has not been beaten on, (rears have not let loose on dry pavement, or have even made a sound yet, but it has also not been babied, have touched the rev. limiter once or twice).
I know this was a long post but Im trying to be as detailed as I can. You guys have anything!

SDUECE

Sorry to hear about your problem, I'm no good at these things and recently I myself am having this buzzing noise coming from my engine.

laguna2s2k

Thanks for your concern! And I did read your post, the way you described it, I instantly thought of a vibration caused by one of your mods. But you seemed to be ruling them out appropriatly. Its tough to describe an odd sound, I know a bit about cars but, beyond that, I cant give you much, (without hearing it mysef) Good Luck!