3/16 mod - Subaru WRX Forum
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post #1 of 6 Old 03-23-2005, 12:02 AM Thread Starter
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3/16 mod

### exactly does the 3/16 mod do? and also, ive seen premade kits for the 3/16 mod on ebay... are they worth buying if i am too novice to make my own?
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post #2 of 6 Old 03-23-2005, 06:10 AM
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well i was thinking of trying it as well, but most of the reviewing i have done on the web has not been very positive. I don't think it is worth it. It will allow your boost to build earlier and last a little longer. Sounds kind of cool but I doubt their is that much of a difference with it than stock and if you search the forums here you will find your answer very quickly. Don't do it. Instead go buy your self a good cup of joe at starbuck's.

Last edited by gingertooth; 03-23-2005 at 06:22 AM.
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post #3 of 6 Old 03-23-2005, 06:44 AM
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Messes with the boost selenoid. I wouldn't mess with it. Too many people complain about their boost dropping to 9psi, and not coming back up again.
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post #4 of 6 Old 03-23-2005, 07:19 AM
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It just replaces the stock restrictor with a little larger restrictor. Not the brass restrictor. This is a black plastic restrictor. It won't hurt anything, but I haven't seen where it makes much of a performance gain either.

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post #5 of 6 Old 03-23-2005, 11:22 AM
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I had it on my car for a couple of weeks and didn't really notice a difference. Still peaked at 1.07 bar w/ my turboback exhaust, which was about the same as w/o the 3/16. It costs about 80 cents so I definately wouldn't buy a kit for it.
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post #6 of 6 Old 03-25-2005, 04:52 PM
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i noticed a lot of spikes when i had it in, then i jst bought a mbc a week later, 15k and no probs(15.5 psi)

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