Quote:
Originally Posted by DriftDreamzSS
In the YouTube comments the owner says its a 3076r, so a pretty normal sized turbo for a 4cyl. Might have a anti surge compressor housing that makes spool louder.
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Well whatever it is, it sounds awesome.
Quote:
Originally Posted by E90///M3`
blow-off valve release pressure from the turbo spooling once the throttle bodies are closed and that excess air has nowhere to go.... the sound you're hearing when he let's off the gas.
as for the sound upon acceleration... it's more than likely the sound of the turbo spooling. but at the higher RPMs it's probably mixing with the sound of an external wastegate of some kind. that is open to atmosphere vs being rerouted back into the turbo.  |
The master has spoken.
