Euro Diverter Valves and DV+ Explained [GO FAST BRETT] 

Seemed more like it was the best edit for a bad situation. The bits and pieces are small, and Bret kept "talking with his hands" while holding them so it looks like it was difficult to get and keep a close enough shot of the components so you could see what he was talking about as he waved them about. Plus the "script" transitioned very quickly between hands on demo segments which are best suited to a close up, and general information that is best served by the medium shot. Not insurmountable problems, but maybe not worth whatever considerations are necessary to re-shoot it with everyone's schedules and such.

Would help if brett kept his hands a little more steady when demoing the product. Great product tho. I dont even need one and I'm sold.

Don't listen to them Brett, you're perfect the way you are.

i am not talking about Brett

Craig Tripney I was replying to ratgreens comment about how brett doesn't keep his hands steady.

Ever seen Aussie shows like Rescue Special Ops. In and out and camera shaking seems to be the norm over there. And yes, it's annoying as hell!

Butt Beware - I guess yours is not a uk abarth, I was told the uk one is slightly different

Rb5vega Yep, they're different. North America uses the Multiar engine.

Butt Beware.......lucky

said no one ever......

Buy a Kia

does it give a louder blow off sound

And murders your bearings so good too!

Ceazar Carr it doesn't replace it, euro manufacturers use a diverter instead of a BOV because they use an air flow meter instead of a manifold pressure sensor

Patrick Aguilar Cool, I kinda get it, I guess. Thanks

Ceazar Carr from what I was told and from what I saw on my mk4 jetta, basically the diverter valve is kind of like a blow off valve but like the name says, instead of getting rid of the extra boost it divertes it back into the intake. I might not be right but it would make some sense, to me at least.

Malabar101 Thanks, that makes sense to me!

Historically I have seen a lot of confusion, misconceptions, misinformation and many questions about waste gates, blow off valves and diverter valves. Hopefully the following helps. The Waste Gate is located in the hot side of the turbocharger and is responsible for setting and regulating the maximum boost pressure. It is a valve that opens and bypasses the hot exhaust gas around the turbocharger turbine and either reintroduces the exhaust gas into the exhaust tubing downstream of the turbocharger or releases it into the atmosphere. The Blow Off Valve (BOV) is located in the pressurized charge air tubing after the turbocharger compressor (cold side) and is for relieving boost pressure helping to mitigate damaging compressor surge when throttle is rapidly lifted or closed. The discharged charge air is usually released into the atmosphere or anywhere in the turbocharger intake tract on vehicles employing Manifold Absolute Pressure (MAP) sensors for engine fuel management strategies. The Diverter Valve (DV) is located in the pressurized charge air tubing after the turbocharger compressor (cold side) and is for relieving boost pressure helping to mitigate damaging compressor surge when throttle is rapidly lifted or closed. The discharged charge air is usually recirculated into the turbocharger intake tubing before the turbocharger inlet and after the Mass Air Flow (MAF) sensor on vehicles employing MAF sensors for engine fuel management strategies. Why recirculate the charge air? To preserve the correct air/fuel ratio (AFR) that has been calculated by the ECU/PCM using air mass measured by the MAF sensor. Releasing that already accounted for air mass into the atmosphere would result in a very fuel rich condition. Waste gate regulates max boost pressure. BOV helps mitigate high volume/pressure compressor surge on MAP applications. DV helps mitigate high volume/pressure compressor surge on MAF applications.

Not likely, seeing as he works at GoFastBits, who build valves. ^^

I'm doing exactly the same as you tonight, but 4 years down the track... Hopefully, your experience was a good one...

ne2i The 1.8t is vacuum actuated so the valve isn't like a on off switch like the mk5. I have the GFB DV+ on my 03 works great as a replacement for the stock Bosch DV

Great if found it! Thanks for the tip!

Did GFB fixed your problem?? Or cause the problem

Matt McAlister I think it does matter because when you compress air it's temperature will always rise so you need intercooler to cool it down no matter of outside temperature

Matt McAlister it makes it more effective as the reason an inter cooler is used is to reduse the temperature of the intake air to get more o2 /cm^2 same thing as being lower down (sea level or lower ) you will make more power as the ambient air is more compressed ex (not real numbers) ambient air is at 1 bar flowes through turbo increase in pressure to 1.5 bar now compressing the air adds heat and the turbo adds heat so let's say +10 * c and the inter cooler is designed to compensate for that. so if your ambient is 10 *c lower then where the car was built you could run no intercooler and make the same power or run inter cooled and make more power as the air is more dense leaving the inter cooler. now in the real world it's a lot more complicated then that and long story short you still want to be inter cooled.

Matt McAlister doesn't matter what temperature it is, once the air has gone through a turbo it will be hotter than it was, that's why intercoolers are always a good idea.

Even in cold climates compressed air coming out of the turbocharger is always warmer than ambient (because you have the same amount of energy packed into a smaller space). Intercoolers are just a radiator for the compressed air, moving heat from the compressed air to the cooler ambient atmosphere. This makes the compressed air charge denser, which means you can cram more O2 into the cylinders and burn more fuel = more fun.

maybe he didn't wanna be too specific with the materials so that competing companies don't steal his work

ForkMyDongle Pretty much, except it doesn't work nearly as well as a BOV.

Except it also lets the PCM retain boost control

The valve is sticking, it wasn't oiled during install, or the tune expects some amount of boost leakage and the DV+ doesn't do it. A custom tuner should be able to verify and work around this code if needed.

I have the same issue it turned out the inner spring valve remove it inspect it there is some wear put oil or high temp grease there it should solve the issue this code is mechanical stuck code

daniel loke did u buy the upgraded spring when u fitted the bov spacer mate

Ch28Kid On mine for the mk4 you can put different Lengths bolts in the top and I believe it is like using Stronger or weaker springs in the forge DV. Like setting pre load but I could be wrong.

that is just your boost spiking