Saab Repair: 2004 Saab 9-3 Turbo Bypass Valve, state emissions, vacuum leak

Question
QUESTION: Hello Jim,

      Recently, my check engine light came on, so I took it to the dealership.  They told me I needed to replace my bypass valve on the turbo and it would be $600+.  I found a replacement on elkparts for $131 and was hoping to get an idea of the difficulty of installation, or if you recommended I just pay the $600 to replace it.  If you think I could install, also wanted to know what additional parts might be necessary once I get in there (hoses, hose clamps, etc.)  I'm relatively handy, but turbo is a new ballgame for me.  I appreciate your assistance, Jim.

Blake

ANSWER: I have never had to replace this part. Are you sure that is the right part? Replacement looks pretty straight forward, this is a diaphragm kit, not an entire valve. At least that is what I show. No additional parts needed unless you break some thing you should be fine

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Bypass Valve   QUESTION: Thanks for the follow up, Jim.  I have a couple follow up questions if you don't mind.  This is the replacement part I was going to order (http://www.elkparts.com/product_info.php/products_id/237).  Can you give me a general idea of the location of the part in the engine compartment?

Also, if I were to not replace this part, do you think it would negatively affect the engine over time by not having the additional boost?

Thanks again, Jim.

Best,

Blake

Answer
The part you are showing is not for a 2004 9-3 sport sedan. It is for 2002 and older 9-3's. If you actually need a turbo bypass valve , then yes, you should replace it.Aside from the lack of boost it can create a vacuum leak and possible misfire. Also your car will not pass state emissions testing with a ck engine light that is on.