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04-06-2014, 01:43 PM | #1 |
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DIY: N54 $2 BOV Mod
Not sure if this has been covered. Here's a quick and easy write up for the $2 blow off valve mod that you can do on stock N54's:
I apologize if cross-posting is not allowed. LMK, and I will host up the pictures on here.
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Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 |||| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17
Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 |||| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing |||| http://www.youtube.com/user/RaceMeMZ3 Last edited by Ginger_Extract; 11-29-2017 at 08:58 PM.. |
04-06-2014, 02:28 PM | #2 |
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So you basically just capped the ports off and got rid of the connecting hose?
Won't the ECU be looking for the air and have idling problems? Or is it smart enough to compensate?
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04-06-2014, 03:44 PM | #3 |
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04-06-2014, 04:14 PM | #4 |
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I don't think this is a "smart" mod.
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04-06-2014, 08:47 PM | #5 |
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I'm not saying it is, but I'd love to know why not.
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04-06-2014, 10:35 PM | #7 |
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Would love for you to elaborate on this.
For the other comments ITT: - N54 do not have MAF sensors, so no harm, no foul. - This modification also doubles as a means of preventing oil blow-by being recirculated into the intake tract. Working on creating a "collector" for a cleaner look. - No CEL or drive-ability difference, as the caps prevent any sort of leak. Aftermarket chargepipes/BOV setups operate in the same fashion. I've had the car setup like this for nearly a year, and still love the sound.
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Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 |||| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17
Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 |||| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing |||| http://www.youtube.com/user/RaceMeMZ3 |
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04-06-2014, 10:50 PM | #8 |
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its fine, this has been done for my car for almost a year and I have one of the most modded 135s out there. No downside to doing this, no real upside either though aside from nicer turbo sounds.
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04-06-2014, 10:56 PM | #9 | |
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Quote:
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04-06-2014, 11:17 PM | #11 |
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I have an oil catch can. Would it be stupid to do both?
Also, I want sound videos!
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04-06-2014, 11:54 PM | #12 | |
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I'll make a quick sound video. It's quieter than aftermarket BOV, and does not sound "ricey" at all. It's loud enough to enjoy, but not loud enough to gain unwanted attention.
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Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 |||| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17
Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 |||| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing |||| http://www.youtube.com/user/RaceMeMZ3 Last edited by Ginger_Extract; 04-07-2014 at 12:01 AM.. |
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04-07-2014, 01:06 AM | #13 |
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I am asking mostly because I already have an OCC that I am about to install this week but I also have the recirc capped already so the whole point of the OCC is to stop the oil from getting back into the intake system but this is achieved already by capping. Is that correct? If so I have a new OCC for sale lol.
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04-07-2014, 01:24 AM | #14 | |
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Quote:
Video is live. Watch it in HD because YT compressed the hell out of the video:
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Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 |||| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17
Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 |||| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing |||| http://www.youtube.com/user/RaceMeMZ3 Last edited by Ginger_Extract; 04-07-2014 at 01:30 AM.. |
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04-07-2014, 02:15 AM | #15 |
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So this won't cause damage to the motor?
And excuse my stupidity, but where is the air that is usually recirculated going? |
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04-07-2014, 09:04 AM | #16 | |
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The stock components are still functioning exactly as they did before. The stock setup has the recirculating tubes sending the the excess air back into the system. By doing this mod, the excess boost pressure is effectively "venting to atmosphere" instead of going back into the system, hence the noise. Look up how a BOV works, the first paragraph explains everything succinctly: http://en.wikipedia.org/wiki/Blowoff_valve
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Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 |||| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17
Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 |||| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing |||| http://www.youtube.com/user/RaceMeMZ3 |
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04-11-2014, 10:37 PM | #20 |
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04-13-2014, 09:06 AM | #21 |
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Read my post, it explains what you need...
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Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 |||| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17
Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 |||| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing |||| http://www.youtube.com/user/RaceMeMZ3 |
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04-13-2014, 11:01 AM | #22 |
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I just did this last night, went to Lowes bought the 7/8s plugs/caps. Came in a 4 pack. cost me more than $2 though! $2.42 after tax! I love it, not as loud as the video though. Quick question, I keep seeing pictures of the big plastic piece near the firewall gone and nobody mentions removing it in any of the DIYs I have seen, is that piece needed? (not the cabin filter piece, the big plastic piece below it).
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