You can get a kit that makes dump valve noises via under bonnet speakers for fifty quid.
I never thought that a dump valve was applicable to a diesel engine. Diesels run on excess air (no throttle to restrict air intake, like a petrol car has) so no need for a dump valve.
When you lift off the pedal in your (diesel) car all you're doing is telling the ECU to stop fuelling. Air flow is never changed, so your turbocharger will spin up equally quickly in the next gear. There's no need to 'dump' an air charge as it's always available given the nature of a diesel engine.
PS:- HDi Peugeot diesel units sound pretty nice anyway, they hiss and make air intake noises under acceleration that are quite sexy (if cars' noises can be as such)
Dump valves have a use in off-road petrol fuelled rally cars. To me they sound like someone trying to flush a toilet inorder to dispose of an unrequited turd and an over size sanitary towel. Not so sexy, really.
And, with a diesel turbo, no need for it. |