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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 07-18-2009, 08:14 PM   #1
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bpv question.

this week i plan to make a homemade air intake. but while i was under the hood i wanted to take off the hose that goes from the bpv to the intake pipe. so it releases into the air. that way i get more of a whooosseee! is this okay to do? no filter needs to be attachted? negitive side effects? this is temporary until i get a forge bov in a month or two. thanks for any help!

- Andrew
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Old 07-18-2009, 08:26 PM   #2
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It will make the WOOOOOOSH sounds

You don't need a filter

It will not mess up your engine or anything.

Here is my custom intake just to give you an idea.
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Old 07-18-2009, 08:31 PM   #3
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nice man! i figure i could prob do the same sorta set up for about $50ish. drawling in air from behind the headlight mostly?
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Old 07-18-2009, 08:57 PM   #4
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Just make sure to block off the hole in your intake pipe
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Old 07-18-2009, 09:06 PM   #5
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Quote:
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Just make sure to block off the hole in your intake pipe
i know gs sells plugs. but until that gets shipped here any temperary plug ideas?
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Old 07-18-2009, 09:31 PM   #6
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people have used coke bottle caps, but you should just wait for your plug
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Old 07-18-2009, 09:41 PM   #7
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people have used coke bottle caps, but you should just wait for your plug
what about a mini breather filter? i believe i have one laying around instead of a plug.
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Old 07-18-2009, 09:51 PM   #8
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to put on your intake hole? you need something that completely blocks it off
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Old 07-18-2009, 09:55 PM   #9
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to put on your intake hole? you need something that completely blocks it off
hmm okay, i think i will just wait until i get a new plug in. as well as a new hi temp hose for the bpv. until then i will focus on the custom intake.
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Old 07-18-2009, 10:15 PM   #10
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You should get 15 feet of 3.5mm or 4mm silicone hoses for the vacuum lines. Im sure someone has the diagram for T5 vacuum lines somewhere
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Old 07-19-2009, 08:24 AM   #11
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You should get 15 feet of 3.5mm or 4mm silicone hoses for the vacuum lines. Im sure someone has the diagram for T5 vacuum lines somewhere
yep we think alike, i was going to order some and redo all the lines. you need about 12 feet to do everything right?
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Old 07-19-2009, 09:43 AM   #12
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I ordered 15 just to be safe and Its been nice to have a little extra lying around just in case...its only what $1.50 per foot? I think you can probably do it with 10 feet if you pre-measure thoroughly.
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Old 07-19-2009, 10:23 AM   #13
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Yes, its 12 feet but its always good to have extra
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Old 07-19-2009, 02:02 PM   #14
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Yes, its 12 feet but its always good to have extra
agreed, you find the hose diagram for the all the hoses? i cant seem to find it..... i remember seeing a thread before.
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Old 07-19-2009, 02:54 PM   #15
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There are very few vacuum lines to replace on a T5 car. The BPV line, the line that goes from the PCV barb to the throttle body, and a few others that are pretty obvious.
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Old 07-20-2009, 06:34 PM   #16
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just do what I do; when I want to replace a vac line I take off one side of the old one and put the new one on. The I follow the old line to where it was connected at the other end and put the new vac line on; that way you dont get confused
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Old 07-20-2009, 08:41 PM   #17
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Quote:
Originally Posted by 9k aero View Post
It will make the WOOOOOOSH sounds

You don't need a filter

It will not mess up your engine or anything.

Here is my custom intake just to give you an idea.
Hey i got my intake in... however its really close to the belt that is under the intake hose. i see you have a large bend. what size is that? where did you get it...? i sorta need one bad
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Old 07-20-2009, 08:44 PM   #18
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ehh, mines really close to the belt, but it is fine. Make sure it wont move and doesn't touch and you should be all good.
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Old 07-20-2009, 08:47 PM   #19
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well i had to leave the bottom of the air box in as a temporary to hold up the filter so it wont hit, kinda want a more stable and reliable solution. haha
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