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Should I delete my DPF?

Djwoody Jul 8, 2012

  1. Djwoody

    Djwoody Member

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    I've heard advantages of deleting the DPF are no costly bills if things go wrong, more power and better MPG.
    Are there any disadvantages of deleting it?

    Chris
     
  2. Old-Boy-Racer

    Old-Boy-Racer Guest

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    When I had my remap (R-Tech) they advised a DPF removal but not EGR valve. DPF was removed, cut in half, innards taken out, body re-welded back together, software delete.

    Advantages: better MPG, engine breathes easier, more power, no £1500 to replace it when it wont regenerate, no worries about short journeys, no having to take it for a run up the motorway to do a regen.

    Disadvantages: cost of removal (small compared to replacement) - I view it as pro-active maintenance.

    One concern: there is talk of the DPF becoming part of the MOT, but as I understand it IF this ever happens it will only be a visual inspection to ascertain it is there. If you have it done like mine it would still pass. Removing it will not affect the emmissions tests.

    Not an expert but I believe the above to be true.
     
    leedano likes this.
  3. Djwoody

    Djwoody Member

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    Thanks for that.
    What BHP are you running now and also how is your MPG?
    I have almost the same motor as you. 2008 CR170 TDI.
     
  4. Brodster

    Brodster Well-Known Member Team Ibis VCDS Map User Audi S4 Audi Avant Owner Group

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    No major disadvantages BUT way more advantages. Get it done and enjoy the power.
     
    leedano likes this.
  5. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    We do quite a few and they certainly go a lot better!
     
  6. dex140

    dex140 Member

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    Rick,
    What type of BHP are you getting witht he delete and remap. I keep seeing people wha have had it done reaching nowhere near what has been quoted from some companies not from Unicorn may I add tho.

    Upgrading to the 170bhp in october an i wil no doubt be coming over to stockport for you to work your magic sometime!
     
  7. Old-Boy-Racer

    Old-Boy-Racer Guest

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    My bhp is now 205 and more torque thatn I need. I occasionally get wheelspin in 4th in the wet.

    Steady drive up to R-Tech (85 miles) I got 48 MPG. Same drive on way back I got 52 and that included them (amd me) taking it out locally to them to give it some welly. I recently got 59 MPG from Watford to Bedford, but there are miles of 50MPH roadworks. I reckon I am getting about 6MPG more after the remap and DPF delete.
     
  8. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    Dex, 205bhp is a realistic figure, but with big torque. You won't get more than 190 with the DPF usually.

    Rick
     
  9. paultaylor

    paultaylor Member

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    Hi Rick,

    I would be interested in this but as it's my wife's 2007 2.0Tdi 170 I'd be more interested in economy than power increases. And not over straining the turbo would be a bonus too.

    Does a DPF delete map exist where the current power and torque are maintained with just the regen adjustments etc?

    thanks

    Paul
     
  10. gizm0

    gizm0 Member

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    How much does it cost to have the dpf removed pipe or the unit emptied? Also how hard is it to fit the dpf delet pipe? Quite handy on the tools and have fitted exhausts etc in the past and regularly work on cars myself. Can it be done on a driveway for example?

    Thanks
    Dan
     
  11. dex140

    dex140 Member

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    What kind of torque would it be pushing? New car will have DSG so hopefully in the correct parameters for that. what is the rough turnaround time of this?
     
  12. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    Hi Paul,

    We can map it to do anything you want. You can have it as you say where no extra diesel is injected over standard. There will still be a power and economy increase. In a specific economy map, the pedal charteristic can be altered as well as the diesel timing in order to provide a more efficient burn.

    Thanks, Rick
     
  13. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    Dex,

    we have seen over 330lb.

    Rick
     
  14. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    Hi Dan, we charge £600 for the complete job including remap. The physcal removal isn't something I'd want to do on a drive. Depending on where the pipe comes from, there maybe welding involved.

    Rick
     
  15. Djwoody

    Djwoody Member

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    I already have a Superchips bluefin installed on my motor.
    When I get a DPF delete and code out, can I just install my bluefin again?
    I.e take off the map before, and map it after?
    Otherwise my bluefin would be a waste of money.
     
  16. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    No, unfortunately your blue fin will overide any DPF code out. The car would be mapped specially to take advantage of the removal - and you wouldn't want the bluefin as you would lose performance. Probably best to sell the bluefin.

    Rick
     
  17. A3-8PA

    A3-8PA Member

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    I have read the following article and it seems I am in the similar sort of situation.

    Audi A3 DPF Issues (Case Study) | DPF Issues

    I bought Audi A3 2008 1.9tdie (105 bhp) a year ago and so far DPF light came twice, not that bad as sometimes I do lot of short runs. It also judders when idle. Nobody know why. Some independent said it is to do with flywheel but according to stealers, it is normal with diesel engines nothing wrong with the motor. Done all the checkups nothing has been diagnosed. Now living with it but still hunting for a proper fix.

    I am ready to spend some money for the DPF removal but not sure about legal stuff, MOT, etc.
     
  18. APAutomotive

    APAutomotive Shark Performance Shropshire

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    DPF is not part of the MOT
     
  19. Old-Boy-Racer

    Old-Boy-Racer Guest

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    I paid £500 (minus a discount for a returning customer) to R-Tech for the delet plus remap. They kept the car for two days. They will do it in a day but if any prolems occur this gives them very little time to sort it out - and they don't like to return a car unless it's spot on. It's not really a DIY job. The DPF has to be taken off, cut in half, emptied, and then welded back together (properly so it looks/performs right) and refitted so it still looks like a DPF is still there. There isn't a DPF delet pipe as far as I know.

    Then the ECU needs to be fooled into regenerating followed by the DPF being removed from its memory.

    All best done by a specialist IMO.
     
  20. A3-8PA

    A3-8PA Member

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    Where they (R-Tech) based? Website?

    Will there be any problems with MOT or any other legalities?
     
  21. Old-Boy-Racer

    Old-Boy-Racer Guest

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    DPF MIGHT become part of MOT but (as I understand it) only a visual inspection (is it there?)

    Detailed article on DPF here:VW Audi DPF filter regeneration with DPF problems like clogging and why you can't do a DPF bypass or DPF delete with a kit

    Is yours a PD engine. If so rough idle (cured on mine) was down to camshaft timing after I read the following article: VW Audi DPF filter regeneration with DPF problems like clogging and why you can't do a DPF bypass or DPF delete with a kit

    The dealer (non Audi) I bought from, and Audi Service both said these Audis are rough on idle. Well mine is now smooth as you like. I wouldn't know the engine is on inside the car, once it's warm. I insisted the Audi Tech checked the timing with VCDS and he reported back it had been 2 degrees out.

    Regards
    Alan
     
  22. Old-Boy-Racer

    Old-Boy-Racer Guest

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    ECU Remapping, Performance Engine Tuning, R-tech
    Hinckley
    Leicestershire
    LE10 3BY
    T: 01455 617 233
    info@r-techpower.co.uk

    I cant speak for any other re-mappers. I have only dealt with R-Tech and they are great. There are some really good guys out there. Don't know if anyone has any other recomendations.

    Regards
    Alan
     
  23. Simon170TDI

    Simon170TDI Member

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    Jbs do a good DPF delete pipe package.. Pipe remap dog bone bush and fitting and BMW panel filter £850 ish mark 210-240 bhp 310-340nm torque
     
  24. Old-Boy-Racer

    Old-Boy-Racer Guest

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    Shouldn't make any difference. See comments further up this thread,

    Alan
     
  25. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    R-tech are good guys :)
     
  26. Simon170TDI

    Simon170TDI Member

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    Bmc not BMW lol stupid iPad
     
  27. A3-8PA

    A3-8PA Member

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    Thanks Alan...

    After reading few posts up it seems the way R-TECH doing it, visual inspection should not be problem... Rest not very clear..

    Mine is audi a3 1.9tdie 2008..

    How much audi will charge to check timing with VCDS???
     
  28. Old-Boy-Racer

    Old-Boy-Racer Guest

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    Give them a ring and have a chat. They are very knowledgeable about VAG motors.

    IF DPF ever becomes part of MOT it should only be visual inspection so having the cannister properly rewelded and refitted is paramount. I am advised DPF removal will not be noticed on currnt emissions tests. Does that make it clearer?

    Alan
     
  29. Old-Boy-Racer

    Old-Boy-Racer Guest

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    Not sure. Supplying dealer paid, but it took him about 1 1/2 Hrs

    Regards
    Alan
     
  30. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    I would defo recommend the gutting method. EGR delete is also included in the price I quoted :)
     
  31. Old-Boy-Racer

    Old-Boy-Racer Guest

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    R-Tech said the EGR on the 2.0TDi was much improved (over the 1.9PD) and not to bother touching it.
     
  32. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    They are better, still give problems and soot up the inlet though.
     
  33. Djwoody

    Djwoody Member

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    Can I just ask what is the EGR? and what the benefits are of removing it?
     
  34. Rick @ Unicorn Motor Dev.

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

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    EGR - Exhaust gas recirculation. On part load, exhaust gas is directed back into the intake and improves part emissions. Diesel exhaust gas is dirty stuff, and these valves begin to stick and fail, causing the ar to go into limp mode. The gas needs to be cooled before it enters the inlet and passes through a cooler which can also fail.

    The second issue is that the dirty exhaust gas leads to the intake becoming heavily sooted up which restricts air flow and can lead to rough running. Getting rid means the engine has lovely fresh air all the time :)

    Rick
     
  35. Old-Boy-Racer

    Old-Boy-Racer Guest

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    Very succinct explanation from Rick.

    If you want more detail: VW and Audi TDI EGR system FAQ
     
  36. Djwoody

    Djwoody Member

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    Some good information there. Just thinking whether it is worth deleting the EGR as well.
    Has anyone had this done?
     
  37. Heisenberg

    Heisenberg Member VCDS Map User

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    I have had the dpf and egr delete and custom map from Rick and I would recommend his work to everyone, the mpg is a lot better 650+ to a full tank with mixed driving and the power delivery is brilliant :)

    Also I would like to add that Rick really looks after his customers as I had a few hiccups with the car and Rick helped me diagnose the issue which was a failing maf at no extra cost.

    Thanks again Rick and hope to see you again.

    Kind regards,

    Paul
     
  38. kreska

    kreska New Member

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    Hi Guys, Im new here :p but I got some questions and hopefully you can help me ;) I wanna delete DPF from my Audi 1.9 TDIe, cuz mostly i drive in a city and is annoying.. 1) Do you know any good garage in West London who can deal with it? 2) Also I would like to map the engine . . . what's the best way to do it and what's the maximum BHP you can get out of my engine now is 105. and also a good place to do it.

    Thanks
     
  39. leedano

    leedano New Member

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    Hi folks iamnew to this forum but not new to owning audi cars. I bought an audi a3 tdi 170 with 100k but a bargain so i thought,and after 3 weeks my dpf filter was totallyblocked even after completing 3 regens. in my opinion the only solution is complete removal and removal of dpf software from the ecu and a remap. my car is now running superb, has 205bhp and could have been increasedto 225 but due to mileage i declined which was at tuners advice too. i have over 315 lbs/ft torque and no problemsnow at all and it barely even smokes . its the best thing to get done to this car and my advice is to get your car in the good hands of SIMON COLLIER at ECOTECH PERFORMANCE in BUCKLEY, FLINTSHIRE, . this guy knows exactly what he is doing and will talk through everything before going ahead with the work and after the work will prove the power gains on the rolling road dyno at his workshop at ECOTECH.
    ecotechperformance.co.uk . very reasonable price too asirang around 25 companies that carry out this work and some wanted as much as £800 , whereas simon does the job correctly with no more fault codes and a much fairer price than that. LEE
     
  40. Baza1819

    Baza1819 Member

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    Maximum you should be paying is £400 all in, incl remap & delete.
    Just sorted my brothers' tdi 170 quattro ( quattro twice the work )
    See my post !!
     

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