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The mkiv Supra Owners Club

Stock J-spec turbo noise


Guest Atomaton

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Guest Atomaton

Since i bought this car 8 months ago the turbo noise has sounded a bit strange, it starts off with a quiet whistle up to about .3 bar then the whistle is replaced by more of a whooshing sound (like there's an air leak). Just wondered if this was normal for J-spec turbos, had a UK one of these a while back and it didn't make this sound. All the pipe work looks ok and i've just replaced the BOV as it was knackered (made no difference). It's got a full CW decat with restrictor ring and a nur spec and max's out at 1bar..

 

Shoud it be a nice clean whistle all the way?

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