Let's cover the basics...
Stock T25
GReddy VSPL
GReddy Type S
Enjuku Hot pipe
Custom turbo inlet pipe with misc foam filter.
Ball&Spring boost controller (10psi)
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She's been doing fine for a few months now with nothing out of the ordinary. I recently ran in a road race event and was able to knock all but 1 bolt out of my turbo elbow (holding it to the turbine). I replaced all 3 bolts and both nuts with new hardware (complete with threadlocker). I also put my 300zx front brakes on.
I took my car out on the highway and bedded in the pads. Then I was just messing around and took it up to about 128mph. After that...whenever I get into boost my turbo makes a considerably different "spooling" noise. Sounds much louder and deeper. It ALMOST sounds like a leak, but I'm just not sure. I haven't take too much time to look into it, but I removed the ball & spring boost controller to eliminate possibilities. Everything looks nice and tight and the car will hold 7psi of boost no problem. It almost sounds like something is caught in my inlet pipe.
Tomorrow I plan on pulling some pipes to investigate further, but just wanted to get some opinions on this. (FYI...no spooling problems, no problems holding boost, no smoke, no nothing...just this spooling noise)
Any ideas?
Stock T25
GReddy VSPL
GReddy Type S
Enjuku Hot pipe
Custom turbo inlet pipe with misc foam filter.
Ball&Spring boost controller (10psi)
She's been doing fine for a few months now with nothing out of the ordinary. I recently ran in a road race event and was able to knock all but 1 bolt out of my turbo elbow (holding it to the turbine). I replaced all 3 bolts and both nuts with new hardware (complete with threadlocker). I also put my 300zx front brakes on.
I took my car out on the highway and bedded in the pads. Then I was just messing around and took it up to about 128mph. After that...whenever I get into boost my turbo makes a considerably different "spooling" noise. Sounds much louder and deeper. It ALMOST sounds like a leak, but I'm just not sure. I haven't take too much time to look into it, but I removed the ball & spring boost controller to eliminate possibilities. Everything looks nice and tight and the car will hold 7psi of boost no problem. It almost sounds like something is caught in my inlet pipe.
Tomorrow I plan on pulling some pipes to investigate further, but just wanted to get some opinions on this. (FYI...no spooling problems, no problems holding boost, no smoke, no nothing...just this spooling noise)
Any ideas?
