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Thread: DEFFINITE ANSWER on vacuum lines

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2011-01-06 04:36:45
DEFFINITE ANSWER on vacuum lines
I have searched but not really clear on which vacuum source to connect my BOV and BOOST gauge im also running a GREDDY boost controller. Could someone help me out and give me a clear answer on this.
2011-01-06 05:43:08
My bov is off an intake manifold vacuum hose....its teed off and check valved from the evap purge control line. Boost controller should be inline from the wastegate vacuum source line.
2011-01-06 22:19:56
have my boost controller inline like you said, but how about the boost gage where do i get that vacuum from
2011-01-06 22:26:47
I like the charcoal canister source for vacuum/boost. It is the least important device and it is one of the larger diameter sources.

Technically this source shouldn't be used for wastegates (with diaphragms) as diaphragms don't necessarily like to see vacuum. It may put extra stress and oscillations on the diaphragm that it wouldn't normally see and may shorten the life of the diaphragm. (That being said, personally I've got mine hooked up to vacuum/boost anyway.)
2011-01-06 22:29:19
check the sticky's on the bov question I believe this guy ^^^^ is the one that wrote it. http://www.sr20-forum.com/turbo/16477-basics-boost-control-wastegates-how-turn-up-boost.html
2011-01-07 03:32:50
Charcoal canister/ evap canister purge control valve, its the same line.... its the big one coming off of it...

Youre on your own on running the vac line to the boost gauge. I drilled a hole when I couldnt figure out how to get the little black plugs out of the firewall.... Personally I used fuel hose because what I had was the right size haha
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