Focus and stupid DPF regeneration

Retrogamer

Appears to be illegal in the same way that a remap, or almost any other performance altering engine modification would be illegal.

Netwizard

daveyjp wrote: »

I'm now looking at 150-200 bhp auto petrols which get mid 30s mpg around town.

Never in a million years will that happen! Low 20's max

pulliptears

The 1.6 TDCi Focus is a bit renowned for DPF problems, soon as they get to higher mileage 60k+ they start throwing out DPF error codes regularly.
If you google 'focus 1.6 tdci dpf problems' you'll find a lot of reading to be had

dark_knight_2

Gloomendoom wrote: »

There are a lot of doom mongers on here. As I said above, we have two cars equipped with DPFs and in four years they have been no trouble at all. We just drive them like any other car we have owned. No special treatment at all.

Can you let us know which car/s you have?

Ultrasonic

Retrogamer wrote: »

It would be too difficult to police effectively as well IMO. Cut open the top of the DPF, remove all contents and reweld. It's on the top facing the body of the car so one can see the cuts, it still passes the smoke density test and a visual inspection the DPF still appears to be present.

Interesting point. There presumably must be a difference in the emissions following a DPF removal (or car manufacturers wouldn't fit them in the first place), but at present the MOT test emissions test isn't suitable to detect this, is that right? The solution would seem to be better emissions testing equipment, but I guess the cost would be prohibitive?

daveyjp

Netwizard wrote: »

Never in a million years will that happen! Low 20's max

I have just driven a 154 bhp petrol auto over 12 urban miles it did 34 mpg. That was from cold and it took about 40 minutes.

Gloomendoom

dark_knight wrote: »

Can you let us know which car/s you have?

Chrysler 300C and Kia Sportage.

Gloomendoom

Retrogamer wrote: »

Appears to be illegal in the same way that a remap, or almost any other performance altering engine modification would be illegal.

You mean it isn't?

chriz1

Retrogamer wrote: »

Appears to be illegal in the same way that a remap, or almost any other performance altering engine modification would be illegal.

Since when has a remap been illegal?
The way dpfs work is they collect the ash then burn it off when when the sensors detect a pressure build up determined by manufacture settings to trigger a regeneration, different cars seem to differ but usually, engine has to be upto operating temp,over a certain amount of fuel in the tank.

Netwizard

daveyjp wrote: »

I have just driven a 154 bhp petrol auto over 12 urban miles it did 34 mpg. That was from cold and it took about 40 minutes.

What car please?

Might be my next purchase as mine won't get near that!