Hey guys,

 

Since having my  2010 Yeti, 2.0tdi, 4x4, 140 remapped to 178ish I've notice the car runs very frequent dpf regens - approx 100 miles.

 

I've attached the current DPF readings to the post, is something up or is this all normal?

 

For the first time ever I had the DPF light come one the dash, a good run out and it went away. I then decided to run the VAG DPF as I was driving and was shocked to see the dpf racking up soot levels as quick as It did.

 

The car runs very well, no issues bar the now annoyingly constant regens.

 

Thanks

 

The DPF will regen when either the Soot measured or the Soot calculated reads a certain value, so whichever gets there first.

As for your measured, they shouldn't normally read a negative value, so might need adapting or cleaning of the tube down to the DPF.

 

Odds are the remap has the car thinking that it has a loot of soot (calculated, not measured) being generated, when as mentioned the actual real measured values are perfect.

This could be a limit of the car's actual ECU thinking it is making a lot of soot, potentially the ECU might need rolling back to a pre-NOx flash, and then tuned once more.

 

FL_03L906018BR_6748.frf <-- This will be a pre NOx version

 

FL_03L906018BR_9970.frf <-- This is the beginning of the NOx version (emission cheat fix)

FL_03L906018BR_9977.frf <-- Your current flash

FL_03L906018BR_9978.frf

FL_03L906018BR_9979.frf

FL_03L906018BR_9980.frf

FL_03L906018BR_9981.frf

Edited 1 December, 20223 yr by varooom

It raises the question about who mapped it for you?  

A local garage remapped the car for me so a phone call will be made tomorrow morning that's for sure.

 

A little off topic and not something I'm looking to do but has anyone deleted their DPF?

 

My Yeti is a 2010, done 110,000 miles and one day it's going to be a debate I will have to have no doubt.

Removing a dpf is illegal and it's presence and whether it's been tampered with should checked at the MOT 

It's an overly rich, basic tune, loading your DPF up too frequently. I had the same problem plugging in a tuning "box", they are all crap, and run overly rich, thus generating excess soot for the DPF. I was doing regens every 100kms or so on that box, whereas stock was 350-400kms. Your DPF looks healthy with a very low oil ash residue, unless the tuner reset that value ( likely ).

 

I went to a name brand tune from the box, and the regens slowed down, but never went back to "pretune / box". All power tunes will produce more soot, the question is how crude they are, and thus how much unnecessary soot they make.

 

If you find a diesel tuner who has an actual idea of diesel tuning, and isn't just reselling a crude "direct from the wholesaler" type tune, your regens will settle down.

Try to get the local garage to put on a "eco" or "blue" tune, it should still provide extra power, but at far less additional fuel.

 

Even better go to a tuner with a rolling road, and ask them to limit the soot, by going easy of fuelling off boost.

 

Yep you can delete the DPF, but then this sooty tune will be glaringly obvious, plus your car will fail the MOT's you have in the UK, unless you swap it back to stock and bolt the DPF etc back in each year for inspection. That's a PITA.

 

The car will make healthy power with the DPF in place, better to add the 170 turbo and get that tuned instead of deleting the DPF, soot is a product of not enough air flow to the fuel. More turbo flow allows for higher air density and less soot, but hard to negate it in the laggy off boost area. The stock 170pd turbo tunes up nicely however, and at low soot levels.