Site News - 11/22 Member of the Year Voting
Date: Sun, 04 Mar 2007 10:05:13 GMT
From: johannes <>
Subject: Re: '99 9-5 hooter valve options?

Dave Hinz wrote: > > I've got a '99 9-5 with the 170BHP 2.3L LPT engine. My hooter valve is > hooting. I see vendors selling "upgraded" versions of same - do they > really do anything or should I just buy a stock replacement part? If I > can get some HP out of the deal I'm all for it. The function of the bypass valve is to keep the turbo spinning when going off the pedal, thereby reducing turbo lag. I don't see how that can increase HP.

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