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Originally Posted by The Radium King
only when engine loaded? probably driveline related. only makes noise when clutch engaged? driving down the road at 2400 rpm and engine is making noise, push clutch in and what happens? shift into neutral and keep the engine at 2400 rpm and what happens?
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Clutch in, noise gone.... I can not reproduce this noise not matter what rpm with the gear in neutral and car standing still. Only when car is running in gear, mostly in 3rd and 4th on the road, at steady speed with very delicate, slight throttle opening. Taking the foot off or pushing the pedal just a little instantly kills the noise, and back to the slight opening it comes back, very repeatable.
It seems as if combination of UDP, 996 TB and maybe 997 engine mount of recent changes is causing some kind of isolated system instability that the factory ironed out, and it woke up this noise ghost? 
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1997 Boxster arctic silver/ red, XNE riveted mahogany/ leather steering wheel & 917-style wood shift knob, Ben’s short shifter, PSE, 996 TB, UDP, stereo/ center console delete, hardtop and speedster humps, daily driver rain or shine or snow!
Last edited by Boxstard; 11-12-2018 at 05:34 PM.
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