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Speedparts Stage 2 ECU = about 16 PSI boost ....
Posted by REM in Seattle (more from REM in Seattle) on Sat, 4 Jun 2005 08:46:30
In Reply to: What if you are honking?, Dean C, Sat, 4 Jun 2005 03:57:06
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That is a lot more than the stock boost level of 12 PSI (manual transmission) and 9 PSI (automatic transmission).
You should look at getting an aluminum bypass valve or using the Viggen style Bosch valve. I understand that MP Peformance has a new aluminum bypass valve in the works, and there are always the Forge Motorsport and Hyperboost models.
The aluminum bypass valves are around $130-$150, and require periodic cleaning (open and wipe clean every 15,000 miles, then re-grease the o-rings and reasemble). The aluminim bypass valve will last forever by simply replacing any worn o-rings.
The Viggen or Porsch 911 style Bosch valves cost around $50, but can not be rebuilt. So you may have to replace the Bosch valve again in the future.
REM in Seattle
2005 Saab 9-3 Aero Convertible; 5-speed; 4000 miles
1998 Saab 900SET; 5-door; Automatic; 77,000 miles
1984 Saab 900T; 3-door; 5-speed; 242,000 miles (RIP)
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- BOV, Ray in Rochester, Fri, 3 Jun 2005 20:34:30
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