Has anyone had the dpf removed and a remap carried out on the octavia 2 vrs diesel? Mine has 45k on the clock and is having issues with the dpf and back pressure sensor. I have a quote for a remap from ECU flash in Yorkshire and the local garage can remove the filter. Never had a remap before but this seems the only way to solve the problem with the dpf for good. Also would appreicate any advice rgds the remap ie what remap stats could/should be done so as to increase performace but not cause any excess damage?

I've just had this done and Wega had it done some time ago. Who have you got your quote from? I toyed with the idea of getting the mapping done by RS Tuning and getting the local Longlife guy to do a dpf replacement pipe. I weighed up the options and decided I wasn't prepared to have an argument with either mapper or exhaust guy in the event that it didn't all work as planned. JBS in Chesterfield recently ran a group buy which dropped the cost to the point where it was only about £100 more and potentially stress free with a single point of contact.

Upside, 220-240bhp

I've just had this done and Wega had it done some time ago. Who have you got your quote from? I toyed with the idea of getting the mapping done by RS Tuning and getting the local Longlife guy to do a dpf replacement pipe. I weighed up the options and decided I wasn't prepared to have an argument with either mapper or exhaust guy in the event that it didn't all work as planned. JBS in Chesterfield recently ran a group buy which dropped the cost to the point where it was only about £100 more and potentially stress free with a single point of contact.

Upside, 220-240bhp

Hi mate, got the quote from ECU flash based in Doncaster (local to me) had a couple of discussions with the guy on the phone and checked out their website and also spoke to others who have use d them with good feedback given. The quote I have had is £220 to remove the sensors, up the BHP to around 220ish as well as improve the MPG. As for the removal of the dpf, the car is just comming out of warranty anyway so Im taking it down to some mechanics that I know who run a garage local to where I live, they are going to remove the dpf for about £100 so all in all not a bad deal - hopefully!

I was a bit concerned as I have never had a car chipped/re mapped before but I here that once the dpf is removed they can be tuned very well. ECU have offered my a warranty and call back in the event that anything goes wrong though.

Can I ask one thing?

Here in Germany it is absolutely illegal to remove DPF on any car, as the taxes a calculated on having one or not. Now here in the UK-forum it all seems rather normal and nobody says anything negative about it.

Get me right, I think it's ok , too, but how is the legal situation in the UK? Is one legally allowed to simply take out the DPF?

Edited 25 March, 201016 yr by Octavia1Z

Can I ask one thing?

Here in Germany it is absolutely illegal to remove DPF on any car, as the taxes a calculated on having one or not. Now here in the UK-forum it all seems rather normal and nobody says anything negative about it.

Get me right, I think it's ok , too, but how is the legal situation in the UK? Is one legally allowed to simply take out the DPF?

Yes

Yes

But I dare say the MOT regs will be changed in time so DONT throw any bits away, you may need them one day

But I dare say the MOT regs will be changed in time so DONT throw any bits away, you may need them one day

Without doubt!

I've got it covered

I've got it covered

How have you got that covered mate?

To be honest given the amount of problems I have had with my DPF If the MOT regs change, Id rather buy another car than pay a grand to fit another DPF!

The reason I wont fit another DPF is purely based on the fact that I was informed by the garage that the filter only blocks up if the car is driven on short runs about town, I currently work in a job which requires me to cover around 600miles avg per week on the motorway and as stated the car has only done thus far 45k and I have had the DPF problem 3 times now.

The garage that is going to remove the DPF is the same one that will do my MOT's so I will check to make sure that he isnt going to take it out then fail me in 6 months time on an MOT (dont believe he will as he is a friend), its all a bit of a cryin shame really as the VRS is a fantastic car but unfortunately is marred by some tree huggers bright idea!

I am thinking of having a remap done on my VRS PD170 sometime in the future but not sure I want to go to the trouble of removing the DPF. I have seen in other posts the main consequence of a remap is the increase in soot loading on the DPF because you burn more fuel but am puzzled as to why that should be a problem.

As I understand it the extra soot loading would only occur when you are accelerating hard, which is exactly what they tell you do if the regen light comes on! So my question is, has anyone who has had a remap done actually noticed any increase in the frequency of regeneration or is this issue just an urban myth?

Also on the question of DPF problems where the regen light is coming on frequently (regardless of whether a remap has been done), has anyone thought of or better still tried out using an exhaust heat wrap to insulate the DPF and thereby raise the operating temperature of the filter. Would it work and what problems, if any might this cause? Presumably, as long as it was put on securely, this might help to reduce some of the issues of frequent regeneration rather than going to the expense of removing the DPF altogether.

Do you have to remove the DPF to have the car remapped?

Do you have to remove the DPF to have the car remapped?

No but I think you will get more problems. If VAG cant get it to work on std settings any mapper no matter how good will get problems at some point.

Edited 26 March, 201016 yr by Stuart_J

The reason I wont fit another DPF is purely based on the fact that I was informed by the garage that the filter only blocks up if the car is driven on short runs about town, I currently work in a job which requires me to cover around 600miles avg per week on the motorway and as stated the car has only done thus far 45k and I have had the DPF problem 3 times now.

The garage that is going to remove the DPF is the same one that will do my MOT's so I will check to make sure that he isnt going to take it out then fail me in 6 months time on an MOT (dont believe he will as he is a friend), its all a bit of a cryin shame really as the VRS is a fantastic car but unfortunately is marred by some tree huggers bright idea!

He wont fail you under the present legislation as the diesel test is the same for all cars. At some point a clever bstrd in government will twig whats going on & legislate that all cars fitted with a DPF when new must still have one, then we will just knock the middle out & still pass a visual test .

Its a bit like the tax laws on cars, a car is currently taxed as it was built so any mod to a car dosent raise the tax but raises the emissions. Theoretically you could buy a Prius, stick a 6 litre supercharged chevy engine in it & still be taxed the same. As the Prius chassis is built of a substance not much stronger than Bocofoil that would collapse under the weight & has dubious brakes its probably not worth attempting.

I am thinking of having a remap done on my VRS PD170 sometime in the future but not sure I want to go to the trouble of removing the DPF. I have seen in other posts the main consequence of a remap is the increase in soot loading on the DPF because you burn more fuel but am puzzled as to why that should be a problem. As I understand it the extra soot loading would only occur when you are accelerating hard, which is exactly what they tell you do if the regen light comes on! So my question is, has anyone who has had a remap done actually noticed any increase in the frequency of regeneration or is this issue just an urban myth?Also on the question of DPF problems where the regen light is coming on frequently (regardless of whether a remap has been done), has anyone thought of or better still tried out using an exhaust heat wrap to insulate the DPF and thereby raise the operating temperature of the filter. Would it work and what problems, if any might this cause? Presumably, as long as it was put on securely, this might help to reduce some of the issues of frequent regeneration rather than going to the expense of removing the DPF altogether.

When I had my PD170 Passat remapped it used to regen a quite regularly, before id never even noticed it happening

When I had my PD170 Passat remapped it used to regen a quite regularly, before id never even noticed it happening

Out of interest who mapped it ? I know of people having Superbs (mk1) done & getting more problems, thats what has made me wary of remaps without removing the dpf. We had enough hassle on the superb as std, great car but could never trust it & dont miss it.

Edited 26 March, 201016 yr by Stuart_J

Out of interest who mapped it ? I know of people having Superbs (mk1) done & getting more problems, thats what has made me wary of remaps without removing the dpf. We had enough hassle on the superb as std, great car but could never trust it & dont miss it.

If a remap is making regen more frequent that seems to suggest the remap has made fuel consumption worse at low engine rpm so you get poorer fuel economy on short journeys around town or when in 6th gear on motorway? From what I have read elsewhere once you get the revs above 2-3000 rpm the heat in the exhaust should be enough for the catalyst to work properly and burn out the soot. If that is so it ought to be possible to remap the engine so that below 2000 rpm it does not change the power output but the boost comes in progressively at higher revs, when the DPF will operate at its most efficient.