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Upgrade your Tial BOV vacuum line!
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08-12-2015, 04:00 PM | #1 |
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Upgrade your Tial BOV vacuum line!
For those of you guys using a Tial BOV, I highly recommend upgrading the vacuum line and nipple to full 1/4" ID.
I've gone nearly a year using a 3.5mm ID (roughly stock) line with the stock plastic nipple on the intake. After switching to 1/4" the BOV is much much more responsive, I didn't know what I was missing! It opens instantly even at lower boost and the flutter I was getting at lower boost is gone now. I think the plastic nipple on the intake was the bottleneck. I removed the intake and cut off the old plastic nipple, then drilled/tapped the same hole for 1/8" NPT in order to thread in a 1/4" brass hose barb fitting. NPT threads seal very well already but I used a good amount of high-temp RTV to better seal it to the intake. JB Weld probably would have been a better and more permanent solution but I didn't have any. Except for drying time of the sealant, it took just a few hours to do. I think Tial recommends a 1/4" line too.
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08-17-2015, 01:10 AM | #4 | |
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08-17-2015, 02:03 PM | #5 |
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Chances are your BOV isn't working optimally with a stock ID vacuum line. If it's working well-enough though, then you might not want to mess with it. But if you get bored or have you intake off for another reason (like walnut blasting) then this would be a good time to upgrade the line and fitting on the intake.
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08-18-2015, 11:36 AM | #6 | |
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