ECU Tuner _ DPF delete possibilities.

[Transporter]

The Golf is 2007 2.0L PD TDI and Touareg is 2008 CRTDI.

[CustomSpooling]

The Golf is 2007 2.0L PD TDI and Touareg is 2008 CRTDI.

By looking at your fingers I guessed that!

If you put a common rail engine up again a PD engine with both of them having no DPF you will still get much more soot from a PD.

Common Rail have a much more "finer" burn.

[jazd]

My Golf (PD with DPF) must produce a bit of soot, it always has a bit on the bottom edge of the exhaust tips when I wash it.

I sure as hell wouldn't be driving a car that made as much soot as that Leon though.

[Greg Roles]

By looking at your fingers I guessed that!

If you put a common rail engine up again a PD engine with both of them having no DPF you will still get much more soot from a PD.

Common Rail have a much more "finer" burn.

Yep the obvious big upside to common rail is the far more "mixed" emulsion that can be made in a direct injection diesel between fuel and air. PD is definately a lot cruder, and limited by design. Still at the moment the PD's are making better power tuned, and I'd be very scared to run a comon rail on anything but the very best fuel, whereas my long term goal of running my TDI on bio is much more likely in a PD, or earlier!

[kaanage]

Yep the obvious big upside to common rail is the far more "mixed" emulsion that can be made in a direct injection diesel between fuel and air. PD is definately a lot cruder, and limited by design. Still at the moment the PD's are making better power tuned, and I'd be very scared to run a comon rail on anything but the very best fuel, whereas my long term goal of running my TDI on bio is much more likely in a PD, or earlier!

I thought that the issue was precise control injector timing and duration and that this is why the GT diesels have piezo electric (rather than magnetic solenoid) switching. I would have thought that the PD design could produce as much pressure as the common rail HPFPs so that the injector nozzles could be identical.

I imagine that the standard PD engine would clog a DPF in very short order while the GT injectors give the same level of control as the newer CR engine which is why the GT has a DPF.

[Greg Roles]

True to a point, there is a step up in fuel atomisation and pressure each time, but common rail can inject in several pulses, and in doing so make a far better, less soot likely mix. The pizeo GT is relatively a lot closer to the 103kw, the step up to common rail fuel delivery wise is massive. DPF's were an afterthought to PD, and common rail was designed to work with it, and is much better at doing so. Plus the MK6 has a FAR better DPF design....

[kaanage]

Doesn't the PD pump act like a little independant HPFP? This should allow the piezo electrics to give the GT injectors the same control as for a common rail (I would have thought)

[CustomSpooling]

DPF's were an afterthought to PD, and common rail was designed to work with it, and is much better at doing so. Plus the MK6 has a FAR better DPF design....

X2. It is no wonder why so many PD owners opt for a DPF delete. It is a very very common modification to do to a PD here in Ireland. I did check a 140 bhp PD with a DPF delete and with STANDARD mapping the car produced 14 bhp extra by only deleting the DPF. Proves it is a substantial restriction to gas flow!

[kaanage]

Has anyone tried a MkVI DPF on a MkV GT diesel? It may be that the difference in DPF design/implementation is a bigger difference between the MkV GT diesel vs MkVI GTD CR diesel (both 125kW) than the PD w piezo electric actuated injectors vs the CR.

[jazd]

Who said a DPF costs $4k? Check this out -
VW GOLF A3 2.0TDI EXHAUST CATALYST DPF - 1K0 254 703 GX | eBay UK
Yes it may be reconditioned and you have to include shipping but still heaps cheaper.

[Greg Roles]

$4k is VW Aus rrp. Yep they have started turning up at a quarter that on ebay which is good news. Still like mentioned above I would be trying to retrofit the split MK6 version, but I am already hearing about problems in that system, specifically the new flapper in the exhaust.

I would be buying any major part from Europe right now.....their prices are far more sane.....

[CustomSpooling]

Hi guys,

Just to let yous know, I am in the final stages of setting up a Vendor account with Admin team. I can then offer members of vwwatercooled my tuning services for performance / economy / custom DPF deletes / EGR cycle minimizations etc.
I may kick it off with a Group Buy offering a reasonable discount to you guys Down Under!!!

[jazd]

Hi guys,

Just to let yous know, I am in the final stages of setting up a Vendor account with Admin team. I can then offer members of vwwatercooled my tuning services for performance / economy / custom DPF deletes / EGR cycle minimizations etc.
I may kick it off with a Group Buy offering a reasonable discount to you guys Down Under!!!

Sounds good! Waiting for your offer.

[jazd]

Might be a good option for getting DPF delete pipes shipped over (when it launches) -
Shipsourcing in two days - Shipito's Blog

[Greg Roles]

DPF delete pipes will be available locally soon. I'd like them to be steel to keep the costs down, and I would recommend ceramic coating for thermal control and longevity / appearance.