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  3800 SCII Simple vac/boost diagram, need advice for my build.

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3800 SCII Simple vac/boost diagram, need advice for my build. by fisherlr777
Started on: 01-14-2014 08:44 AM
Replies: 1 (69 views)
Last post by: phonedawgz on 01-14-2014 09:21 AM
fisherlr777
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Report this Post01-14-2014 08:44 AM Click Here to See the Profile for fisherlr777Click Here to Email fisherlr777Send a Private Message to fisherlr777Edit/Delete MessageReply w/QuoteDirect Link to This Post


I'm definitly looking for advice, This is my point of attack so far for my 3800 build. (i'm still a newb, and trying to wrap my mind around the fluid dynamics of air and engines in general)

So evap stuff deleted, the stuff that MUST stay is the MAP sensor,and the fuel pressure regulator (both boosted) I plan to leave the boost control valve so as to save a bit of gas at idle (probably not that big of a difference?)
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Report this Post01-14-2014 09:21 AM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
Most (all?) 3800 SC Boost Bypass Valves have a dual vacuum source, one being LIM (Boost & Vacuum) the other being just Vacuum. Then on the boost side of the BBV there is the BBV solenoid.

I like moving the MAP from on top of the engine to the transmission. It cleans up the top of the engine.

I also like keeping the Evap Purge Solenoid. It allows you to keep the charcoal canister and doesn't affect performance. If kept the Evap Purge Solenoid is located between the vacuum only source and the purge port on the canister.
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