Another BPV / DV Alternative

[DDQ]

After being chipped, many need to upgrade their stock Bosch 710 Bypass Valve. Most (including me), upgrade to the TT Coupe 710N, which is an improved version of the stock 710 valve, found in the A4. While this valve has been more than reliable for me running about 15psi of boost, but some people here are running higher levels of boost and want an even more reliable, longer-lasting valve.

Which brings me to the Bosch 110 valve found in the Porsche 996, which is another great alternative, and I never hear anyone mention it. It's said to be a stronger valve. It's also very affordable relative to the other aftermarket diverter valves, like Forge, Bailey, etc...

Anyway, you can get this valve from most dealers for about $45.

Is anyone else running this valve?

[BQAD]

Are you talking about this one?
http://www.hoppenmotorsport.com/bypass.htm

[alen]

i've never heard of this valve until today when a friend of mine gave me his two DVs. one is the 710N and one is the 110 porsche DV. he used them both for a very short amount of time on his gti 1.8t and he liked them both until he switched to forge. he told me that the 110 was also used on the older S4 (92-94) so is that true?

i'm installing one of the DVs on my car tonight so if i have enough time i will prolly test them both out and report back here (it's my first time doing this).

it's funny how you wrote this today and i got those valves today, too.

[DDQ]

Originally posted by BQAD
Are you talking about this one?
http://www.hoppenmotorsport.com/bypass.htm

Yes, that's the valve. But it's a overpriced there. You can get it from the dealer for cheaper, and I even read someone got one from the partsbin site for about $23.

I have read that many say the 110 is on par with the 710N, but many also claim it's a tougher valve, and much harder to tear. For a few extra bucks, I think it may be worth a shot. I've never been a fan of spending $100-$200 on a fancy valve that has to be serviced. I'd rather put a brand new part in every year or so, since it will still be cheaper than buying a pricey one.

My DV's have lasted over a year easily, and should be good up to 30k miles, if not longer.

[SSiNeDD]

Sweet DDQ u the man thas what i was loookin for u 2 come up with and tell me bout it. =) ima order me one of those

[DDQ]

Thanks SSiNeDD, your post here is what made me look into it more: http://www.audizine.com/forum/showth...threadid=13955

The symptoms you said you had are what I was saying is a sign of a faulty rubber diaphram in a BPV, which is also described here on Joe Hoppen's site: http://www.hoppenmotorsport.com/bypass.htm


"As stated in Audi’s technical bulletin dated Dec. 8, 2000 the bypass valves should be replaced should the following occur: “Groaning or howling noise from engine compartment when accelerating during partial load between 2500-3000 RPM,” or “ Rattling noise when decelerating between 2000-3000 RPM,” which “may be caused by the internal diaphragm of the charge pressure bypass valve producing pulsating noises.”

[SSiNeDD]

sounds like the same prob i have
sweet, i prob did blow the diaphram =\
ill try n get the porch dv ASAP
and let u kno on the outcome

[sumpsfast]

Great post DDQ. You are fun to bicker with but you sure know your s--t!

[needforspd]

I need a new DV. 710N or try this 110? Im not chipped .. yet.

[SoleMate]

Thanks for the info, I'm looking into buying one as we speak.

[DDQ]

Originally posted by sumpsfast
Great post DDQ. You are fun to bicker with but you sure know your s--t!

lol, it's never personal . I'm a sucker for debates, I can't resist, even when I have to play the devil's advocate.


needforspd - If you're not chipped, the stock valve shoud be fine. In fact, my stock valve was old and still lasted for awhile after I was chipped. But, if you're going to replace the stock valve, you might as well just pick up a 710N for about $30 from ECS.

[sumpsfast]

You just want intimidation with the fist in the avatar huh??! I ain't scared

[skene]

710N found on the TTs is a semi decent replacement however it's still a Bosch valve with a rubber diaphram. 110 is a Porsche Turbo valve.. same bosch valve different application.

Moral of the story.

Rubber diaphrams still suck.

Get yourself a piston based diaphram. ie. EvoMS BPV.

[alen]

should i install the 110 the same way as the 710N?

[skene]

actually.. yes if you are going to replace it with a rubber valve.

but Audi installs the valves backwards from the factory so that they are less prone to damage.

[alen]

hmm, i don't understand now. this is my first time installing DVs and now i'm confused. i have a 710N and a 110 (porshe) and i want to test both of those out.

the DV already on the car is a regular 710 but i can see that it was changed before b/c of the clamps. now, i don't know which way to install the 710N or the 110.

[skene]

replace it the same way only if its a 110 or 710n.

[DDQ]

Originally posted by skene
710N found on the TTs is a semi decent replacement however it's still a Bosch valve with a rubber diaphram. 110 is a Porsche Turbo valve.. same bosch valve different application.

Moral of the story.

Rubber diaphrams still suck.

Get yourself a piston based diaphram. ie. EvoMS BPV.

Rubber or not, it does it's job. And if I rip it, then I put a brand new part in my car for about $30. With other valves, you have lube them, clean then, adjust them, etc...

With BPVs you'll never feel a difference in performance, they all perform, they all do the same exact thing. I don't need a fancy shiney valve somewhere I'll never see it.

So, I guess it comes down to this: Do you want to install a brand new part in your car for $30 each service interval... or do you want to spend ~$150 for a part you have to remove, clean, adjust, and re-install each time?

I'm not doubting that a piston design is more durable and longer lasting. But I just don't think it's worth the money.

[EVIL-AUDI]

I'll stick with my Bailey

[needforspd]

I dont have a stock one on. There's a TurboXS on there now (bought the car used) and it's leaking now so I need to replace it. Would rather replace then figure out how to fix the damn thing.

Ill get the 710N then.

Originally posted by DDQ

needforspd - If you're not chipped, the stock valve shoud be fine. In fact, my stock valve was old and still lasted for awhile after I was chipped. But, if you're going to replace the stock valve, you might as well just pick up a 710N for about $30 from ECS.

[skene]

yes.. look at it any way you want.. however I have never cleaned my bpv out... and it still works.

I have however replaced 710n valves and such... think about it...

If you consider that time is money.

Then you spend $30.00 on a Bosch valve.
time spent waiting for delivery which costs money or driving to the local dealership to purchase the valve which wastes gas (and we all know how the prices of gas has been per gallon).
time spent jacking up your car and removing the old valve and reinstalling the valve.
etc etc etc.

How does your $30.00 valve look like now?

[skene]

Originally posted by needforspd
I dont have a stock one on. There's a TurboXS on there now (bought the car used) and it's leaking now so I need to replace it. Would rather replace then figure out how to fix the damn thing.

Ill get the 710N then.

The TurboXS valve does not leak.. it may just need a cleaning cause the piston may have stuck or one of your hoses has a leak in it. but if it is a TXS valve... there is no way it can leak otherwise as it is a metal piston based valve.

[MKGIY]

I have the TurboXS valve and ran some crazy psi (27) and not one leak and I have never taken mine out to service it. Best 150 i ever spent over 2 years ago.

Mike

[alen]

ok, so back to my question now: when installing the 710N and the 110, the spring loaded end should connect to the IC piping, right?

[needforspd]

Hmmm ok, how do i clean the b!tch? What products to use, etc.

Thanks.

Originally posted by skene
The TurboXS valve does not leak.. it may just need a cleaning cause the piston may have stuck or one of your hoses has a leak in it. but if it is a TXS valve... there is no way it can leak otherwise as it is a metal piston based valve.

[skene]

take it out... oil the piston.. clean off the oil... put it all back together.

[sumpsfast]

I ordered the bosch 110 today from lindseyracing.com. $40 shipped (two day arrival). I have all the symptoms, sporatic boosts and less pull. Plus rattling AND the moaning at about 3k rpm. Hopefully it will make a diff.

BTW, I do have the evoms CAI, but my blow off or return is rediculously loud right now. sounds reallly cool.

CUUUSSSSHHHHHHH

[alen]

ok. i was going to write up my problem, but i'll just post it here. i installed the 110 the other day and so far i have some problems with it. i installed it the OPPOSITE of the pic below:



it's slightly used (~1000 miles) so i guess it should be ok. but, i sometimes feel slight surging throughout the entire range and rattling at WOT in 3rd and 4th above 3000RPM. is this due to this BPV?

also, after replacing it for the stock 710A, i hear less turbo whine and SSSSHHHHH (almost none) compared to the 710A. i'm running an EMCS2 APR chip.

other than that, i don't have anything else to say about it.