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BOV placement

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Old Mar 10, 2006 | 11:05 AM
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Default BOV placement

Thinking about redoing some of the piping on my car. Where would be the best location for the bov? I have mine about 1' from the intake. I see they sell intercoolers with a place to mount a BOV. How about by the turbo? or right after the IC? Just thought I would ask to see where people are putting there BOV's these days. I have a Blitz SS-BOV now. What do you think about going with a Turbo-XS RFL bov?
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Old Mar 11, 2006 | 01:14 PM
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It really doesn't matter that much as long as it isn't right next to the throttle body or right after the turbo. I've run them on both the hot and cold side pipes and it works either way.
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Old Mar 11, 2006 | 01:18 PM
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i think i heard that the closer to the IC the louder, and the closer to TB the better it works? i dont remember.
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Old Mar 11, 2006 | 01:28 PM
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Most people place them on the hot pipe (before intercooler), but i put it on the cold pipe (after intercooler, right before throttle body).

I asked that same kind of question, everyone says that it doesnt really matter, but if you want to get super sensitive, just put it on the cold pipe. Having it near the throttle sort of makes more sense to me . I dont know how to explain it because i just woke up, but someone here might.
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Old Mar 11, 2006 | 02:16 PM
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To me it seems that it would be better on the cold side. If it is on the hot side, the air is hotter and at a higher pressure. Say your BOV is set for 12psi. your BOV is on the hot side. When the BOV sees 12 PSI, the colder more dense, lower pressure on the cold side might only be at 10PSI. (Not sure on how much drop you would actually see across the intercooler, depends on how much heat the intercooler sheads)

Maybe being on the cold side would be a more accurate reading of what PSI your motor is actually seeing.
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Old Mar 11, 2006 | 03:56 PM
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Thanks for the reply guys. I guess I'll keep it on the cold side. Now the other question I had was the BOV. Stick with the Blitz or give the Turbo XS RFL a try?
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Old Mar 11, 2006 | 04:16 PM
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NOOOO, dont go Turbo XS. Ever opened the inside of those before? its a piece of sh*t.
Who the hell uses washers to adjust the spring for their bov? answer: turbo rx does
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Old Mar 11, 2006 | 04:17 PM
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theres no real point to switch bov's unless you dont like the sound.
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Old Mar 11, 2006 | 07:06 PM
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Thanks again for your help....I'll stick with my Blitz..
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Old Mar 11, 2006 | 07:47 PM
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I'd say as close the to throttle body as possible, but if you're running a blow through MAF you'd probably want it before that.
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