Volvo C70 This sporty coupe has a three-piece retractable hardtop for unsurpassed fun whether the the top is up or down.

How to Install a BOV yes im a fat noob

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Old 07-28-2009, 02:22 PM
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Default How to Install a BOV yes im a fat noob

Well I have a 98 C70 hpt and was wondering since im new to cars does anyone have a write up or some good instructions on how to do this and wht are some good bov's?
 
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Old 07-28-2009, 03:09 PM
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Welcome to the forum.

I will say this a BOV on our cars are worthless. We aren't making enough power for them to be useful. With that said if your an automatic it will only go off when you let off the gas and for the split second it vents to the atmosphere you'll run rich. The only thing you will gain is the sound, but again only when you let off the gas.

Some BOV Ideas...

1. HKS SSQV
2. TIAL

Stay away from the TurboXS brand.

Some Mounting Ideas...

1. With the included and or bought extra Aluminum flange have that welded to your Upper IC pipe (The one going over the engine), then run your vacuum line.

2. With the BOV and a bought extra "T" adapter cut the Upper IC turbo hose at the intercooler and insert the "T" adapter in the two pieces of the turbo hose clamp it down tight attach the BOV to the "T" adapter and run your vacuum line.

3. If it is Aluminum do the same as number one but at the Throttle Body pipe.
 
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Old 07-28-2009, 03:27 PM
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Thanks ill probably stick with the stock recircs untill i get the 19t
 
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Old 07-28-2009, 03:59 PM
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Even with a 19t it wouldn't be worth it. Your not going to be running enough power to make it useful. It will still only go off when you let off the gas in an automatic and will still run a little RICH for the split second it vents.

Basically it is a glorified noise maker on your car. Spend your monies on something that will make your car faster, brake better and better suspension or cosmetic.

Trust me when I say this you'll get tired of the sound after about 6 months.
 

Last edited by S70driver; 07-28-2009 at 04:01 PM.
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Old 07-28-2009, 04:22 PM
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Alright i'll take your advice and get a set of anti sway bars instead thanks for your help.
 
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Old 07-28-2009, 04:40 PM
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you will enjoy the bars more than the psssshht sound.

if you want to hear the stock cbv, just put a cone filter on your maf.
 
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Old 07-28-2009, 05:01 PM
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how would that make me hear it?
 
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Old 07-28-2009, 05:35 PM
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the stock intake box is restrictive and prevents you from hearing the turbo spool or the cbv. when you let off the throttle, the extra charged air is released into the turbo inlet (right before the compressor wheel). the cone filter makes it a lot louder.

youtube has some videos about this. mine is pretty loud.
I can get a video up.
 
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Old 07-28-2009, 05:47 PM
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Old 07-29-2009, 05:19 AM
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Thats exactly what im looking for so I should just go with cold air? Or where did you get yours?
 
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Old 07-29-2009, 06:16 AM
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Originally Posted by SeeSevenTea
Thats exactly what im looking for so I should just go with cold air? Or where did you get yours?
FYI, no one truly makes a real CAI for our cars. At least not the 70 series models...

With that said we do have available what are called SRI's or Short Ram Intakes. IPD USA and EuroSportTuning (EST) both have a version of this. Pretty pricey for what you actually get. I have the EST version and I like it a lot. However I didn't pay for it, it was bought for me as a gift!

You could buy either of those mentioned above or make your own. Create your own heatshield and buy whatever cone filter you'd like. Probably could be done for under $100 I would say.

I believe the person that posted the video made his own SRI system there.
 
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Old 07-29-2009, 12:55 PM
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Yep, I built my own. https://volvoforums.com/forum/showth...866#post171866
It is a short ram setup with a custom heatshield. I call it a CAI, because no engine heat can get to my filter.
 
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Old 07-29-2009, 01:48 PM
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So this is probably a good first mod.
 
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Old 07-29-2009, 01:51 PM
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maybe. It is what I started with. you wont gain much from it just by itself other than the sound.

if you wanted to spend the money, swaybars are really good. or lowering springs.
 
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Old 07-29-2009, 02:10 PM
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My question is how would i put a ram intake without making the check engine light show?
 
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Old 07-29-2009, 02:48 PM
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it doesnt set of the CEL. Everything is still connected.
 
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Old 07-31-2009, 05:30 AM
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but this sounds so much better..

http://www.youtube.com/watch?v=7spoLsjrbTk
 
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Old 07-31-2009, 09:48 AM
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Originally Posted by ITS ME DAVID
but this sounds so much better..

http://www.youtube.com/watch?v=7spoLsjrbTk
Yea sadly that car sounds like it is a manual transmission... But more then likely the OP here has a automatic transmission. So like I said before it will only go off when the OP lets off the gas. Trust me I had a BOV and it gets really annoying after six months.
 
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Old 07-31-2009, 11:12 AM
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that is Mike's car in AZ. It is a modded AW-71.
It is an auto. That thing is stupid. No traction in 3rd gear... lol.
We shift them like a manual without a clutch
 
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Old 07-31-2009, 11:48 AM
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Either way in an automatic a BOV is worthless and on our cars we don't make enough power even with minor mods to benefit from them. It is a glorified noise maker and that is about it.
 
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