Re: Boost, Wastegate, Blow-Off Valve????????????????? - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Boost, Wastegate, Blow-Off Valve?????????????????
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Posted by Mike W. [Email] (more from Mike W.) on Sat, 20 Jan 2001 17:51:03 Share Post by Email
In Reply to: Boost, Wastegate, Blow-Off Valve?????????????????, Michael Trevor, Sat, 20 Jan 2001 16:10:19
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1 Boost:
I am not sure about what it is for the SE, I have a S Model. Basically what I did was install a boost controller and bring it up to fuel cut, then turned the boost down a little. I believe up to a little under 1 bar is safe for the original fuel curve.
2. Wastegate:
You will need a Boost Controller, otherwise without it, the turbo will hit fuel cut.
3. Blow-Off Valve:
It does not have to be routed to the intake tube but since we both have automatics it wouldn't make a difference. Because when an automatic shifts the throttle blade doesn't close whereas the manuals will. And the reason the BOV makes the sound is when you take your foot off the throttle to shift the blade closes but the turbo is still making boost and will hit the closed blade, which can cause damage so it vents it.
4. Nobody does, so I made my own. I bought pipe and cut it to length and routed it through the hole beneath the airbox and the filter resides behind the fog lights.

If there are any mistakes be sure to correct me on them.

Mike

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