# Cold pipe or Hot pipe? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [March 23, 2009, 8:45pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887 "2009-03-23T20:45:29Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Conte6](https://avatars.discourse-cdn.com/v4/letter/c/278dde/32.png) [@Conte6](https://forums.speedlife.net/u/Conte6)\ **Post date:** [March 23, 2009, 8:45pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/1 "2009-03-23T20:45:29Z")
Where do I put the BOV? Cold pipe or Hot pipe and WHY? Make sure to explain your reasoning behind your answer. Thanks in advance guys ---
**Author:** ![Martino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/martino/32/5674_2.png) [@Martino](https://forums.speedlife.net/u/Martino)\ **Post date:** [March 23, 2009, 8:47pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/2 "2009-03-23T20:47:12Z")
[http://www.google.ca](http://www.google.ca) Reasoning: It’s an ongoing debate. Just google it and I’m 100% sure you’ll get the answers you want. ---
**Author:** ![kollo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/kollo/32/5661_2.png) [@kollo](https://forums.speedlife.net/u/kollo)\ **Post date:** [March 23, 2009, 9:04pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/3 "2009-03-23T21:04:20Z")
i say hot lets air out at the source where some ppl like it on cold for other reasons ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 23, 2009, 9:19pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/4 "2009-03-23T21:19:10Z")
BOV reliefs pressure so you do not blow off pipes. Does not matter what side you put it on. BUT, O.E 99% of the time is on the cold pipe. ---
**Author:** ![purposebuilt](https://avatars.discourse-cdn.com/v4/letter/p/90ced4/32.png) [@purposebuilt](https://forums.speedlife.net/u/purposebuilt)\ **Post date:** [March 23, 2009, 9:22pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/5 "2009-03-23T21:22:30Z")
OEM is normally on the cold pipe but if you will be pushing alot of boost I’d suggest putting it close to the turbo to relieve the pressure on the turbo… correct me if I’m wrong anyone… ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 23, 2009, 9:27pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/6 "2009-03-23T21:27:09Z")
does not matter where it is. In my mind at least. As long as it reliefs the pressure ---
**Author:** ![DA\_1](https://avatars.discourse-cdn.com/v4/letter/d/ba8739/32.png) [@DA\_1](https://forums.speedlife.net/u/DA_1)\ **Post date:** [March 23, 2009, 9:29pm UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/7 "2009-03-23T21:29:40Z")
you want it as close to the throttle body as posible,so mostly on the cold side.you want the quickest possible reaction with your throttle plate movement,which keeps more pressure builtup it your piping most of the way instead of having to refill backup the piping if it was way back on the hot side! it comes down to throttle responce…not really a big deal…e.g sr20det b.o.v mounted on hotside if you notice the turbos used on the sr20`s got that flutter(turbo surge sound)and it becomes more noticeable as you turn the boost up.this could be the reason why the engineers have mounted the b.o.v on the hotside in order to reduce excessive pressure on the turbo talon/eclipse 4g63t coldside No surge at all so the design of the turbo can play a role in where the b.o.v is mounted… ---
**Author:** ![Fobwall](https://avatars.discourse-cdn.com/v4/letter/f/7ea924/32.png) [@Fobwall](https://forums.speedlife.net/u/Fobwall)\ **Post date:** [March 24, 2009, 5:03am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/8 "2009-03-24T05:03:56Z")
Not again… Put it on the hot side because the bov can get frozen/stuck if you put it on the cold side. This is due to the intercooler cooling the air, and if your bov gets stuck, you will get compressor surge and fuck up your turbo. ---
**Author:** ![DoneDreamin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/donedreamin/32/5678_2.png) [@DoneDreamin](https://forums.speedlife.net/u/DoneDreamin)\ **Post date:** [March 24, 2009, 5:39am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/9 "2009-03-24T05:39:06Z")
Don’t run a BOV at all ---
**Author:** ![bing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bing/32/7211_2.png) [@bing](https://forums.speedlife.net/u/bing)\ **Post date:** [March 24, 2009, 5:40am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/10 "2009-03-24T05:40:06Z")
> [@FS: 2(yes 2) PS3's](https://forums.speedlife.net/t/fs-2-yes-2-ps3s/20619/60): > > Not again… > > Put it on the hot side because the bov can get frozen/stuck if you put it on the cold side. This is due to the intercooler cooling the air, and if your bov gets stuck, you will get compressor surge and fuck up your turbo. it’s one thing to make light of it, but at least don’t post bullshit… come on ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 24, 2009, 5:46am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/11 "2009-03-24T05:46:31Z")
oh shit son!!! ---
**Author:** ![Fobwall](https://avatars.discourse-cdn.com/v4/letter/f/7ea924/32.png) [@Fobwall](https://forums.speedlife.net/u/Fobwall)\ **Post date:** [March 24, 2009, 5:58am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/12 "2009-03-24T05:58:22Z")
> [@FS: 2(yes 2) PS3's](https://forums.speedlife.net/t/fs-2-yes-2-ps3s/20619/61): > > it’s one thing to make light of it, but at least don’t post bullshit… come on I think it’s obvious enough that it’s a joke. And even if they think it’s true and they put it on the hot side, it won’t blow their car up. Hot or cold, it really doesn’t matter too much in the end. ---
**Author:** ![m\_wolfenden](https://avatars.discourse-cdn.com/v4/letter/m/ce73a5/32.png) [@m\_wolfenden](https://forums.speedlife.net/u/m_wolfenden)\ **Post date:** [March 24, 2009, 6:07am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/13 "2009-03-24T06:07:25Z")
i welded my flange on the intercooler… ---
**Author:** ![AhmadG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ahmadg/32/5577_2.png) [@AhmadG](https://forums.speedlife.net/u/AhmadG)\ **Post date:** [March 24, 2009, 6:20am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/14 "2009-03-24T06:20:12Z")
> [@FS: 2(yes 2) PS3's](https://forums.speedlife.net/t/fs-2-yes-2-ps3s/20619/60): > > Not again… > > Put it on the hot side because the bov can get frozen/stuck if you put it on the cold side. This is due to the intercooler cooling the air, and if your bov gets stuck, you will get compressor surge and fuck up your turbo. Put it on the cold side, and instead of recirculating it, duct it towards the brake calipers so you can cool your taurus brakes under deceleration. lol I love SON. ---
**Author:** ![Fobwall](https://avatars.discourse-cdn.com/v4/letter/f/7ea924/32.png) [@Fobwall](https://forums.speedlife.net/u/Fobwall)\ **Post date:** [March 24, 2009, 6:48am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/15 "2009-03-24T06:48:42Z")
> [@Video capture card](https://forums.speedlife.net/t/video-capture-card/21012/3): > > Put it on the cold side, and instead of recirculating it, duct it towards the brake calipers so you can cool your taurus brakes under deceleration. lol I love SON. lol genius! ---
**Author:** ![spd-dmn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/spd-dmn/32/5513_2.png) [@spd-dmn](https://forums.speedlife.net/u/spd-dmn)\ **Post date:** [March 24, 2009, 7:41am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/16 "2009-03-24T07:41:23Z")
if youre recirculating , put it on the hot side near the pre-turbo inlet pipe if not, lots of people suggest near the throttle plate but it’s not going to make a world of difference in either case, hot or cold ---
**Author:** ![Conte6](https://avatars.discourse-cdn.com/v4/letter/c/278dde/32.png) [@Conte6](https://forums.speedlife.net/u/Conte6)\ **Post date:** [March 24, 2009, 8:00am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/17 "2009-03-24T08:00:24Z")
First off, thanks to those who answered seriously. **AhmadG** , thanks for the great advice. However, delinquent kids like yourself should keep their “two cents” to themselves when answering a rather controversial question. If you knew the answer or had any idea as to why people choose either side, then maybe a comment from you would be necessary. Oh god how I love SON as well, keep up the childish posts 😉 ---
**Author:** ![AhmadG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ahmadg/32/5577_2.png) [@AhmadG](https://forums.speedlife.net/u/AhmadG)\ **Post date:** [March 24, 2009, 8:16am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/18 "2009-03-24T08:16:22Z")
^I was poking fun at Fobwall, thats all. If I was being serious and attempted to give advice (I only have theoretical knowledge from reading, no experience at all), I’d say hot side because the routing for the recirculation would be easier to do. I’d prefer not to backfire during shifts next to a cop, so I plan to recirc when I go turbo. 😛 ---
**Author:** ![RED\_LINE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/red_line/32/5656_2.png) [@RED\_LINE](https://forums.speedlife.net/u/RED_LINE)\ **Post date:** [March 24, 2009, 8:23am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/19 "2009-03-24T08:23:23Z")
> [@ipod broke?](https://forums.speedlife.net/t/ipod-broke/21008/13): > > First off, thanks to those who answered seriously. > > **AhmadG** , thanks for the great advice. However, delinquent kids like yourself should keep their “two cents” to themselves when answering a rather controversial question. If you knew the answer or had any idea as to why people choose either side, then maybe a comment from you would be necessary. Oh god how I love SON as well, keep up the childish posts 😉 guess he pulled an Ahmed, haha… I would recommend the hot pipe side, it’s the closest to turbo components. Most setups I’ve seen run them on the the hot side, but it’s weird cuz I have yet to see a definitive answer… :/: either way, I’d stick with a cat so if popping occurs, it’s in check between shifts and checks, also my emissions don’t get hassled with too!! ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [March 24, 2009, 8:25am UTC](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887/20 "2009-03-24T08:25:06Z")
> [@Christmas Tree lights](https://forums.speedlife.net/t/christmas-tree-lights/20985/35): > > ^I was poking fun at Fobwall, thats all. > > If I was being serious and attempted to give advice (I only have theoretical knowledge from reading, no experience at all), I’d say hot side because the routing for the recirculation would be easier to do. I’d prefer not to backfire during shifts next to a cop, so I plan to recirc when I go turbo. 😛 Do not kid yourself like I did. Recirculation BOV is still QUITE loud. [Next page](https://forums.speedlife.net/t/cold-pipe-or-hot-pipe/122887.md?page=2)