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> Bov, BOV
bpray9223
post Jan 13 2008, 12:57 PM
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hello, i was wondering if it is possible to install a BOV on a 2001 Volvo S40 stock turbo? if anyone knows please reply i need some help on which kind to get and instructions.
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mcoles
post Jan 13 2008, 04:12 PM
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Just make sure that it is a dual piston BOV due to the vehicle having a MAF.
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bpray9223
post Jan 14 2008, 10:46 AM
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Would a GREDDY TYEP-RS BOV or a HKS BOV, if any of these would work please let me know and if possible could you direct me to instructions on installing, thanks.

this is the link to the HKS BOV

http://www.volvomotorsports.com/catalog/pr...2c333982b46dfde
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mcoles
post Jan 15 2008, 06:34 PM
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Looks good but you'll need to get the flanges so you can attach to the pipework going to the intercooler.
If I recall there is a guy at s40concepts who's fitted one, google for s40concepts as I can't remember the FQDN for the site.
Good luck and don't forget to post some pics of your finished install so we can all appreciate your handy work.
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bpray9223
post Jan 15 2008, 07:10 PM
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But, how am i supposed to put the BOV on the IC piping when the piping is a hard rubber?
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mcoles
post Jan 16 2008, 07:29 AM
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View the pic in the link, a picture explains a thousand words, however this is using the hose from the intercooler to the throttle body, best results would be achieved by using turbo to intercooler pipework.

BOV fitted
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bpray9223
post Jan 16 2008, 06:07 PM
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is the piping running from turbo to IC lower or upper engine well, and another question, should i just cut the piping in half and find a metal pipe about the same inner diameter of the piping and weld the flange onto the pipe then slip both cut ends of the turbo piping onto the metal pipe with flange?
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mcoles
post Jan 16 2008, 06:44 PM
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I am writing an answer to how I have interpreted your question, please excuse if I have missed it.
The pipe work to the bottom of the IC is from the turbo to the IC, the pipework at the top of the IC is from the IC to the throttle body.
Fitting BOV and flanges as you have described should work, just make sure that there is sufficient neck of your metal pipe inside the rubber piping to ensure a snug/tight fit so that it doesn't come apart when turbo is full boosting.
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bpray9223
post Jan 16 2008, 07:51 PM
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would it work if i fitted the BOV to the piping from the throttle body to the IC, i mean would it still be good and also where should i attach the vaccuum line to and from.
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mcoles
post Jan 16 2008, 08:28 PM
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It will still work but just not quite as quick, as for the vacuum line, it would be the feed from the throttle body, essentially you would be replacing the recirc system with your second valve. Just remeber to block the hose that goes back to the turbo housing.
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bpray9223
post Jan 16 2008, 08:55 PM
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Just to clarify in simpler terms, where should i run the hose connected to the BOV to? and what kind of hose would be ideal? thanks
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bpray9223
post Jan 17 2008, 04:41 PM
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Also, which one of these BOV's would be the best for the Volvo S40 1.9 t?
http://www.optionsauto.com/prodinfo.asp?number=TP-11501662
or
http://www.optionsauto.com/prodinfo.asp?nu...HKS-71004-AK001
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mcoles
post Jan 18 2008, 06:01 PM
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Maybe easiest if you just get a kit:
V40 BOV Kit
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bpray9223
post Jan 18 2008, 09:45 PM
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Would this option sound as good or be as effective as an HKS BOV?
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mcoles
post Jan 19 2008, 08:45 PM
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No idea about performance of either, but Forge Motorsport are a recognised company here.

Let us know what you decide to do and post some pics. :thumbsup:
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bpray9223
post Jan 21 2008, 11:25 AM
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just by guess do u think my car would sound anything like this after installing an HKS SSQV BOV?


http://www.youtube.com/watch?v=qaamwNYxAvU
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mcoles
post Jan 22 2008, 07:28 PM
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More than likely.
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