RB20DET ticking/boost leak?

[0range_240]

Just before I parked my car for the winter last year, I noticed it had developed a hollow ticking/sucking sound past 4k or so when I was stepping on it. It does not seem to be RPM-related, it seems to revolve around heat. I only seem to notice it when its hot outside (30c) and its not consistent. Now that I have the car back on the road again its still making the same noise. Whenever it starts ticking like that under acceleration, I get a slight boost in power it seems, and as soon as it stops I can feel it lose some power. It almost sounds like a wire grounding out on metal or something, but I checked all around the engine bay and I couldnt find any frayed wires. The car doesnt sputter or run rich, it idles nicely at 900 rpm, its just up top.

I replaced the fuel filter, air filter, and removed my old crappy manual boost controller. After i did all that it went away for a couple weeks and it just came back today.

I did a search already, but no one seemed to have a problem quite like this one. I am going to check under the heat shield for lose nuts on the manifold once ive let the engine cool off a bit, any other suggestions?

Im quite stumped.

oh and btw, so far my only mods are Intake/exhaust/GT-R clutch, besides that im stock. The engine is also fresh, it was installed at autodream. Interestingly enough this ticking noise was present with the old engine aswell.

PS: my apologies for the long post, but I figured the more details I could give the better

[0range_240]

Checked the manifold and it all looked good, I noticed its worse in the highers gears, when im in between 4.5-5.5k for a longer period.

Im totally stumped, maybe a leaking wastegate?

TTT

[Yellow4g63]

Did you check the altnator? maybe it's lose or maybe hmm I don't know lol. I never had that problem.

[0range_240]

I changed the plugs and it runs smoother now but the noise still seems to be there, it only seems to be present between 4.5-5.5k or so, before and after is fine. I'm going to go through all my piping tomorrow and try and look for a boost leak?

the only other thing I can think of right now is possibly the fuel pump?

btw, does anyone use MSN or AOL that doesnt mind tech talk? None of my friend's know a terrible amount about forced induction or anything like that.

[rbspitfire]

its not detonation is it? maybe youre loss of power occuring when it stops is the knoxk sensors pulling lots of timing out?? just a quick thought

[0range_240]

if it was detonation, what would be causing it? and what exactly does detonation sound like, because this is not very audible