Date: 05 Sep 1999 20:48:06 GMT From: baur323nopsamcomNOSPAM (Baur323) Subject: Re: Advice for 88' 900T performace upgrade
>Whats is the hooter valve? The hooter valve is the stock bypass valve. When it goes, it makes a "hooting" sound much like an owl, so I've heard. Personally, When I replaced all the ducts' seals, I didn't do the stock bypass and went with a blow-off valve. Wow, with all theses ducks, owls and seals, I should be a member of the Sierra Club. Some ideas to tweak a stock APC instead of the aftermarket ones: Adjust max pressure and duration of boost. remove RPM sensor so the APC doesn't "bleed off" boost at higher engine speeds. Adjust fuel cutoff (pressure sensor in/under dash) so it doesn't stop at approx 1Bar. I have not yet done the latter, yet. Just waiting for the motor to get finished and toying with a few ideas. Personally, I don't think an aftermarket APC is worth the money. There are other ways to get these things faster and allocating the money elsewhere. YMMV. -ray 80 BMW 323i 8? Opel (GT-4 SCCA) 85 Saab 900Turbo 90 Audi CQ 91 VW Jetta GL "When the the going gets weird, the weird turn pro." -Hunter S. Thompson "There is no long way in a fast car." -Gene-Dog
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