2tiredkl

The car is a 2010 1.9tdi greenline. Yes it definitely has a DPF. The 3 year warranty has passed I'm planning to run it on bio diesel. That's why I propose to remove the dpf filter. Running on bio diesel, enables it to pass the MOT (NCT in Ireland) without any difficulty, as the particulate matter (for which the DPF is installed and designed to reduce) is much reduced by burning bio diesel. I plan to remove the filter and leave the filter case and original pipe in place. Thanks for all the contributions, particularly the limp mode advice. However, back to my original question. Has anyone experience of removing this front section of the exhaust and is it a particularly difficult task? I appreciate that what I am proposing to do, is outside risk boundaries for some other people, so I am not advocating this to anyone else. I'm just looking for the benefit of advice based on previous experience, all of which both positive and negative is welcomed. Thanks in anticipation of replies

Thanks for the replies. I take it that suggests getting the remap done first, and remove the filter secondly? The remap specialist is about 100 miles away. I'm located in rural Ireland.

Perhaps as much as a week, between filter removal and remap, but I could tighten up on that time gap. Will it go into limp mode straight away or is it the case that limp modes comes in after 500 miles or so?

I'm planning to do a dpf filter removal and remap. I'm planning to do the job in two parts. First remove the filter, weld and refit the box and then secondly take it to a specialist for remap. I've had a look underneath the car with my mechanic mate, who hasn't done this job before on a 2010 Superb. It looks like it may be difficult to remove the exhaust without removing/dropping other parts. My question is this. Is the front exhaust section with the dpf, easily removed or is it necessary to drop the steering rack or anti roll bar? Hopefully someone has done this before and can give me the benefit of their experience. Thanks in advance

"................Anyone that does this and gets the results please post and let us know" I write this reply as one more happy site member, Lofty. Thank you for sharing this solution. My 1.9tdi, 105bhp, octavia, developed a bad habit of occasionally going into limp mode at or around 75mph. The fuel filter was due a change, it was dirty when removed and I thought that was the problem solved. Not so. I read this post, showed it to the mechanic who works on my car and he agreed to do it. Working from underneath, he removed the exhaust from the back of the turbo, stretched a latex glove over the mouth of the turbo and filled it with Mr Muscle, leaving it for the 2 hour contact time. When working the actuator he found it didn't have full travel, but at the end of two hours, it had full travel and moved smoothly Since the job was done, I haven't had limp mode, despite putting the speed beyond levels that would previously have provoked limp mode. There is now more power through the gears, and better acceleration in 5th. All in all, I'm delighted your solution has worked and I now feel much more assured when overtaking. Thank again Lofty

I had a problem like this on a passat 1,9tdi. It turned out to be a small hole in a rubber air hose before the turbo, causing it to take in excess air and leading the engine management system to limit engine revs. A simple hose replacement sorted it. One of the lower cost solutions to consider first of all.