Lost 5 psi of boost on my SQR Stage 3 CSE? - Saab Performance Bulletin Board - Saabnet.com
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Lost 5 psi of boost on my SQR Stage 3 CSE?
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Posted by jj [Email] (more from jj) on Tue, 23 May 2006 16:13:21 Share Post by Email
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Hi All,

I have a '97 CSE, with a full JT 3" exhaust, Group9 intercooler, modified
air box with K&N and Frank's stage 3 s/w.

Up until recently, the motor would produce peak boost of 24 psi and sustained
boost to around 21 psi, it was very strong.

A couple of weeks ago, the motor began to only produce about 16 psi.

New plugs, gapped at .9 mm, still ran 16 psi.

I reset the ECU by disconnecting the battery for a couple hours, went out
to do adaptation runs and after a couple of large boost excursions, it
settled back to 16.

Added some octane boost (run Sunoco 93), no improvement.
Changed fuel filter, no change.

I installed a HX Hyperboost BOV around the same time this started.
Could the BOV reduce max boost?

Any other ideas to get my beast back?

Thanks,
jj

'97 CSE Anni, SQR3
'95 Auto Aero SQR2
'95 CS FPT

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