Downpipe compatability (TSI)

[MountainBikeMike]

Re: Downpipe compatability (TSI)

airbox/intake, downpipe+exhaust, add a stage 2 tune and you're driving a different car.

I also decided on the GFP DV+ dump valve addon thingo. it will hold higher boost than the stock valve, and not open when its not supposed to haha

simple

Could you please tell me more about the diverter valve? Been wanting to do this!

[zei20t]

Have a read yourself. Mine seems to work fine!

DV+ for late-model VAG and Euro applications!

[MountainBikeMike]

Thats awesome. How much was postage? Fitting time? Does this change noise?

Cheers

[zei20t]

I think delivery was $10. I installed several other things at the same time, but I would imagine around an hour at most for that. its fairly simple to install, its a bit fiddly getting the allen keys up there to get the modded dump valve back on.

but not impossible to DIY.

The sound, I didn't notice much, but it will flutter at lower RPM. nothing loud, just I notice it now when before I didn't.

[brad]

I had GFB underdrive pulleys on the Subaru. Quality stuff & I'd highly recomend their product.

I went to the factory (Marrickville IIRC) & picked them up. Mr GFB was there - it was a sideline business of a bigger machine shop. The guy was very much the enthusiast. He lost his profit margin by talking to me about cars for an hour during work time.

So if I was to get a DV+ would it make any difference in my normal driving which is pottering Hurstville-Campbelltown & return at somewhere between 70-100kph & rarely exceeding 3000rpm?

[MountainBikeMike]

Should help hold boosts between shifts likea recirc valve?

[zei20t]

its holds higher boost for modified cars

cheaper alternative to replacing the valve with a newer one. just rip the internals out of the stock one, replace with the GFP bits. assuming your current dump/dirverter valve is compatible.

it wont affect mileage or your driving style much, if at all.

[Martin]

Should help hold boosts between shifts likea recirc valve?

NO

its holds higher boost for modified cars

Yes, I know what you mean, but readers may take a different/incorrect meaning

The manufacturer claims the stock plastic piston suffers boost leakage - "more than people realize" was the claim
So if you modified the ECU to run higher boost levels, this DV+ is meant to hold higher pressures better

The thing is, I have a stage 2 kit, on track days I'm holding 24 PSI down the straight
So I doubt that there is any problem with the stock plastic piston/valve

The reason VAG went to a plastic piston was because of the fast DSG gear changes
They needed a lighter and faster valve

You would expect a metal one to be heavier/slower
Would love to do some lab testing on this stuff

I'm sure the unit is well engineered and made
I'm doubtful it's had the level of R&D + testing that VAG do

Until proven otherwise, I will regard this cool product as bling

it wont affect mileage or your driving style much, if at all.

It won't have any effect unless:
-Your DV has a problem
-You have a DSG and this product is not as fast as the VAG plastic piston

So if I was to get a DV+ would it make any difference in my normal driving which is pottering Hurstville-Campbelltown & return at somewhere between 70-100kph & rarely exceeding 3000rpm?

Nope - it will give you that warm feeling one gets from installing bling

[zei20t]

actually yeah it does help hold boost between shifts. also not opening on low RPM shifts when the factory valve will.

the spring tension behind the factory valve is pretty soft, which might explain why some people say they leak.

I should have logged some boost curves/rpm. but as I installed other mods at the same time, too much would have been effected.

[MountainBikeMike]

Re: Downpipe compatability (TSI)

[Mysticality]

Wow, Mike. Wow.

XD

[brad]

Shouldn't post selfies

[zei20t]

not picking a fight with you martin, but I still rekon the GFB addon is better than say this Forge item.

this pretty much converts it to a vacuum BOV, and inline with your valve speed (not disagreeing) then this would be even slower (IMO) and is like going backwards in technology.

Home Page ES#1832057 2.0T Diverter Valve - FMDVFSITV

But I agree there is zero performance increase if your factory one is ok. however, the spring tension on it was pretty weak.

[Martin]

It's all good, everybody is entitled to their view

I agree going to a vacuum BOV would be a backwards step for a DSG car

[zei20t]

when I saw those kits I was SHOCKED.

I think GFB have a good product that retains the factory parts (most of them haha)