opti question?
Thread Starter
12 Second Club
Joined: Mar 2009
Posts: 196
Likes: 0
From: deer park (houston area)
opti question? ok ive searched about this and could not find my answerer, so here it goes... my question is that the opti fresh air line that plugs into your intake system... does it matter if it goes before or after the maf? Because it originally connected in the elbow but my new elbow is steel so if i can, to connect it before the maf, into my after market cool air intake thanks for the help
TECH Veteran
Joined: Dec 2008
Posts: 4,144
Likes: 61
From: Little Rock, AR
It actually does matter, but just not very much, since the hose is so small. Since the vacuummed air ends up being burned in the a/f mixture, it should be accounted for by the MAF (which it is, in the stock configuration).
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TECH Fanatic
Joined: Nov 2007
Posts: 1,745
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From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
I don't have a vented system, but I'm guessing the air pulled through the opti flows in the other direction, which would explain shoebox's point about unmetered air entering the engine.
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