[tibra1]

Originally Posted by Young_Man

Never said I was an expert when it came to n54's but I do know that the purpose of a blow off valve is to release excess boost pressure from the intake system when the throttle plate is closed. And I know that without a bov or dv the built up pressure will be forced back through the turbo causing it stall. From what I've gathered on the forum the stock diverter valves may or may not leak over time when running higher boost than stock and I'd rather be safe than sorry. Also it is ALOT CHEAPER to just upgrade your DV or get a BOV than it is to replace your turbos...

Nice edit btw lol

Well I edited it b/c I didnt wanna hurt ur feelings calling you an "expert"..but since you wanna act like a douche.. here it is you dont know what your talking bout..k?

Now your lumping DVs w BOVs?? BOV does nothing for performance..only vents air for sound..DV recirculate air and when your boosted it MAY be necessary to upgrade to better DVs that can hold boost...again no performance gains..you have to run one or the other.. compressor surge is a non-issue..

[Young_Man]

If your dv's cant hold the boost and you go with a bov or better dv's how is it buying them just for sound if you NEED one or the other to keep stress off your turbos? Is there something in the N54 handbook that says you must replace your dv's with better dv's when upping the boost? If blow off valves were just for sound I don't think some of the fastest n54 powered vehicles would be running them.

And just so you know, you won't hurt my feelings lol. I'm always up for a good debate.

Edit: http://www.1addicts.com/forums/showthread.php?t=426286 This car is a perfect example. I guess he just likes hearing the sound...

[tibra1]

No there are tons of people running high boost..w just the stock DVs and they hold boost fine..and some like me run upgraded DVs for good measure and some who run BOV to just vent the air..Maybe your wording or english was poor but this is what you wrote

Originally Posted by Young_Man

Even a BOV isn't a mod to make a sound... It does serve a purpose.

My point is that a BOV's purpose IS to make a sound..

[Young_Man]

I meant what I typed. I was saying that basically it isn't JUST to make sound and it serves basically the same purpose as a DV. Yeah a bov can be loud but at the end of the day a dv and a bov will do the same thing. I guess with the n54 it just comes down to personal preference...

[JBax]

Originally Posted by tibra1

My point is that a BOV's purpose IS to make a sound..

incorrect...the sound is a byproduct of its real purpose which is as a pressure release system to prevent compressor surge

that is like saying that an exhaust systems primary purpose is to make sound.

[tibra1]

Originally Posted by JBax

incorrect...the sound is a byproduct of its real purpose which is as a pressure release system to prevent compressor surge

that is like saying that an exhaust systems primary purpose is to make sound.

LOL...I meant realtive to DV..they both are meant to vent pressure obviously..why one would choose a BOV over a DV is purely for the sound..

this is just word smithing and I think we are all on the same page here..i think

[JBax]

Originally Posted by tibra1

this is just word smithing and I think we are all on the same page here..i think

It's late (here on east coast anyway)...who knows at this point

[shazzy04]

[Syndicategt]

Wow times have sure changed, or reversed I should say.....

I come on this forum now for entertainment purposes and B*********t.com for technical threads now.

[///M3THOD]

Originally Posted by Syndicategt

Wow times have sure changed, or reversed I should say.....

I come on this forum now for entertainment purposes and B*********t.com for technical threads now.

The only reason that this forum is becoming a free for all is because there is an entire lack of moderator intervention. Where the f*** are they? The personal attacks consume 50% of any given thread.

I believe there are several of us out there who aim to post factual and relevant information, as I attempted to do with this thread, but in order to find it one must sift through 5 pages of trash. No wonder nobody searches for anything.. its easier to just ask a question and hope someone serious sees it before the riff raff does.

[Big Tom]

Here's my little ricer:

[turb0mik3]

This discussion gave me a good chuckle. Thanks guys...

First off, you can't hear your turbo because you probably aren't running 16psi+. I don't know about you other guys, but my 430whp car makes A LOT of turbo sound, even above the borla race exhaust and BOV (well from inside the cockpit at least).

For example, here is a video of my car from 60mph roll in 3rd. You can hear the bov, but it isn't gawdy, just a quick release to the atmosphere. And in addition, even through the relatively loud exhaust you can here the hissing of the turbo. So, there ya go... I think it sounds very professional and race'ish.' This didn't have much to do with my decision, but I HATED the whine the car gave after a hard shift with the DVs. Felt like my car had asthma, haha.

Originally Posted by tibra1

LOL...I meant realtive to DV..they both are meant to vent pressure obviously..why one would choose a BOV over a DV is purely for the sound..

I personally just think, in principle, it is more work to recirculate air then to just blow it off in the atmosphere. Most of the kids here on the forums go for HKS or other obnoxious. The BOV was one of the last modifications I did to my car when I was running more boost. It does bug when people throw em' on just for kicks.

[drfrink24]

This has pretty good sound:

http://www.youtube.com/watch?v=b9cWb6WQn8Y

[ScorpionT]

Originally Posted by tibra1

No there are tons of people running high boost..w just the stock DVs and they hold boost fine..and some like me run upgraded DVs for good measure and some who run BOV to just vent the air..Maybe your wording or english was poor but this is what you wrote



My point is that a BOV's purpose IS to make a sound..

Incorrect.

Originally Posted by Young_Man

I meant what I typed. I was saying that basically it isn't JUST to make sound and it serves basically the same purpose as a DV. Yeah a bov can be loud but at the end of the day a dv and a bov will do the same thing. I guess with the n54 it just comes down to personal preference...

Correct.


A recirculating DV is generally used on cars that run a MAF system. Venting metered air to the atmosphere will cause a sudden rich condition and the motor will stumble. A BOV is the simplest type and is more common on vehicles that use speed density metering, rather than a MAF. A DV really doesnt provide any performance benefit over a BOV, but can add some complexity to the system.

In the case of the N55, the compressor cover has the valve built in. When it comes to the N54, the valves are plastic and made by Bosch. They are known to fail, especially on a more modified car. Replacing them with an aftermarket part might not give horsepower gains, but when you get into higher boost conditions they will be much more reliable. They are less likely to leak or fail altogether.

[kdiggz]

Originally Posted by Big Tom

Here's my little ricer:

haha i always knew big tom was a ricer at heart

the next popular mod is going to be the big tom fart can exhaust: