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Lots of opinions out there...
Posted by REM in Seattle (more from REM in Seattle) on Wed, 24 Nov 2004 20:51:00
In Reply to: Here is a detailed picture of my BPV flow right now..., gavin, Wed, 24 Nov 2004 13:18:29
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I have seen lots of opinions about the "best" orientation of the diverter valve. Part of the problem is the differences in diverter valves between manufactures and even between the different options offered by a single manufacture.
Forge Motorsport in the UK wrote in the installation instructions for my FMDV007P Forge Piston Diverter Valve “Although the valve can be fitted in either orientation, I would suggest you fit it, THE SAME WAY ROUND AS THE ORIGINAL BOSCH VALVE. Recent tests have proven this gives a far quieter operation.” It has worked fine for me so far on the 1998 NG900 with Speedparts ECU and 16 PSI of boost.
"The Great Diverter Valve Face Off" is some good reading as well.
REM in Seattle
2005 Saab 9-3 Aero Convertible; 5-speed; 500 miles
1998 Saab 900SET; 5-door; Automatic; 73,000 miles
posted by 24.16.197...
The GREAT Diverter Valve FACE OFF
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