Turbo noise - a bad sign? - Alfa Romeo Forum
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(Post Link) post #1 of 5 Old 29-08-16 Thread Starter
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Turbo noise - a bad sign?

1.9JTD 16V 140HP. I can hear something like an air building up and once off the throttle, a wooooosh. Perhaps some sort of air being released, or pushed.
My mechanic said it's normal since my Pre-cat is removed . No oil leaks around hoses, both are changed. No loss of power , inbefore an oil change.
Simular to this ,but quieter under accel.
Usually I would call it turbo fluttering, but is that possible on a diesel car?
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Same sound on my JTD Mjet, only louder.

This started exactly after I did my full exhaust (removed cat and 63mm stainless pipe)

The exhaust removal just accentuates the sound, which was already there....
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Mine has made exactly the same sound since removing the cats. Its normal
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as above,

situation Normal
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(Post Link) post #5 of 5 Old 30-08-16 Thread Starter
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Okay, thanks. My exhaust is fully tuned too, cats removed all around. Great to know.
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