Great news! Removed the DPF on leon fr

[MitraShark]

Hi guys. As some of you know i`ve tried to remap my car with the DPF and had problems. 2 months ago I remaped the car again, but with a soft remap...It was remaped to 200 hp and 400 Nm. Didn`t had problems with these figures on the Dpf. But i wanted more power...So i started to search how these specific Dpf worked...And i came to a conclusion: The Dpf only activates when 2 pressure sensors reads a determined value. So removing the DPF and put there a direct tube with all the sensors acopolated to it, the Ecu will read the Dpf is always clean...I removed it five days ago and did very spirited driving every day and not a light or other fault. The car is runing very well ( even beter !). And now i have green light to mode the car. The only thing i did ( because of the remap! ) was fooling around the first temperature sensor ( nominated on the vag-com as "temperature sensor 1") with a small resistor on the plug. Otherwise the car would go to limp mode ( once again, because of the remap! and not DPF ! ). ( who did these was a professional and with a lot of knowledge about engine managment! I advise you to get help from a professional. ) Sorry for the bad english. I`ll post pictures later. It`s easier to explain with pictures.

Cheers

Here are some (bad) photos:

Dpf out:

Dpf inside:

1st Pressure sensor mounted on the direct tube:

Direct tube ( pressure sensor and exhaust emissions sensor ) :

Interesting picture ( all these sensors goes in the direct tube! ) :

Ps: will take better pictures another time, but it`s to hot in there now! lol

Hope these information are usefull

 

[devonmikeyboy]

This will be great news for anyoned with a DPF. Well done mate.

 

[MarkE]

Hmm, wonder if something similar would be possible on mine...

Volvo seem to think it's acceptable for the car to drive like a bag of spanners with a race clutch and a fooked turbo for 10 miles every time it goes through the cleaning cycle.

 

[Jamin Berry]

Now we need a tuning company to do these with a remap!

 

[chippenhamwilts]

and exactly how easy is that for the dealer to spot that its missing at service time, so they can then tell you..'by the way, you warranty's invalid as you've Fooked with ya car'..also, you have no idea if any faults will be flagged when they plug in their computer to download ecu faults. extra power is one thing (you might get an extra second 0-60) but when your car goes wrong...ITS GONNA COST YA

 

[BanziBarn]

For those who want to take the risk then I guess it's cool. Personally I think 200bhp with the filter still installed would still be a nice increase. I wonder if this is the way that the main tuners will decide to go?

 

[devonmikeyboy]

If you want any decent power out of a PD170 then you are going to have to remove the DPF as it isn`t really up to the job on a standard car.

@ chippenhamwilts. If the dealer notices the DPF is removed it will only effect your engine warrenty same as a remap or if you put an after market airfilter on etc.

 

[k4ith]

For those who want to take the risk then I guess it's cool. Personally I think 200bhp with the filter still installed would still be a nice increase. I wonder if this is the way that the main tuners will decide to go?

i am no greedy, 200 fine for me, see same section as this, revo waiting to finish map with dpf included.

 

[RobM]

and exactly how easy is that for the dealer to spot that its missing at service time, so they can then tell you..'by the way, you warranty's invalid as you've Fooked with ya car'..also, you have no idea if any faults will be flagged when they plug in their computer to download ecu faults. extra power is one thing (you might get an extra second 0-60) but when your car goes wrong...ITS GONNA COST YA

They will more than likely refuse to do any warranty work on the engine anyway, if you have a remapped car, so removing this isn't going to cause any more problems than a remap.

 

[BanziBarn]

Unless it's a switchable map....

 

[RobM]

Ahhh, touché

 

[MitraShark]

Very true about the dealer if they detect the dpf is missing. They will void the warranty. But it`s also true they will void the warranty if you remap the car and you have any air filter not recomended...and even the suspension if you want it lowered it...and brakes...and exhaust...etc, etc...Some one said the remap can`t be detected...true! But if they suspicious your car is remaped, or was, they will check you ECU and see that it was opened. These means voided warranty. About the servive time, you can always put the DPF in place...it`s an hour job... 30 Euros max! But if you don`t want more than 200 hp than leave the particle filter.

Cheers

 

[RobM]

Most modern remaps don't involve physically touching the ECU, so they wont be able to find out if it's mapped by simply looking at it. But, they can do a couple of other things, depending on the tools and software they have available.

Firstly, they can drive the car. They should know what a standard one feels like, so will know it's it's making XXbhp more.
Secondly, they can take a HEX dump of the ECU and find out through the code itself if it's standard or not.

 

[MitraShark]

Most modern remaps don't involve physically touching the ECU, so they wont be able to find out if it's mapped by simply looking at it. But, they can do a couple of other things, depending on the tools and software they have available.

Firstly, they can drive the car. They should know what a standard one feels like, so will know it's it's making XXbhp more.
Secondly, they can take a HEX dump of the ECU and find out through the code itself if it's standard or not.

yes, i know! But for the ecu on the PD170 it can only be remaped by opening it. Unless the technology to remap by OBDII has been lately released.

 

[Tam]

How badly does it smoke now??

I know that the DPF is there to restrict the emissions it produces - how bad is it now it is missing.

I will assume it will fail a UK MOT emissions test once the time comes for testing.

 

[chippenhamwilts]

I know remaps give more power as does a lot of other tuning, but for the risks involved when you already have a fast car, I cant see the point, unless you like being chased by the feds?

I am looking into remapping my touran at the moment but then it only has 105 bhp and struggles to overtake at any real speed so would be worth while, but what performance increase are you going to get on a 170 tdi. 200bhp will maybe reduce acceleration by maybe a second if your lucky and on the road thats not going to make any difference.

 

[MitraShark]

How badly does it smoke now??

I know that the DPF is there to restrict the emissions it produces - how bad is it now it is missing.

I will assume it will fail a UK MOT emissions test once the time comes for testing.

Compared to other remaped diesels it`s not bad at all. The inspection to my car to check emissions, etc, it`s just in 4 years...So, until there i have sold my car.

 

[MitraShark]

I know remaps give more power as does a lot of other tuning, but for the risks involved when you already have a fast car, I cant see the point, unless you like being chased by the feds?

I am looking into remapping my touran at the moment but then it only has 105 bhp and struggles to overtake at any real speed so would be worth while, but what performance increase are you going to get on a 170 tdi. 200bhp will maybe reduce acceleration by maybe a second if your lucky and on the road thats not going to make any difference.

I already have 200 hp on the car and it made a difference on the road! if more power doesn`t make any difference on the road, then why are we spending money on mods? Imagine +220 hp, which is my goal.

Feds chasing me? lol why should they chase me? i respect all the traffic signs...I`m not a lunatic on the streets...I just do a lot of track days.

 

[Neo_VR]

If you want any decent power out of a PD170 then you are going to have to remove the DPF as it isn`t really up to the job on a standard car.

@ chippenhamwilts. If the dealer notices the DPF is removed it will only effect your engine warrenty same as a remap or if you put an after market airfilter on etc.

Seconded.. the majority of problems ive heard on the modern PD170s and 140's with the DPF have been down to the DPF not regenerating properly.. its a big point of failure, and has been what has stopped me getting a Octavia vRS tdi..

 

[chippenhamwilts]

Going back to my earlier comment, I dont see a re-map giving that significant a performance increase. I would put money on a standard car being more than able to stick with a mapped version on the road (which I did in my old 230bhp impreza when a 400bhp cossy thought he was quick). 20-30bhp doesnt make that much of a difference. Its not all about max bhp but how the power is delivered. If I am right, the touring cars are capped at 300bhp as are WRC cars and they are extremely quick. This is due to better grip, lighter weight but most of all power DELIVERY as opposed to BIG HORSES.

You'd probably gain more speed on or of track with better tyres and brakes (fluids and pads included) than 20-30 bhp from a remap.

For the FR and any new DPF deisels for that matter, it seems like a rather large cost for very little gain.

Like I have said, I can understand when you have a low power car like the 100, 105, 110 bhp cars as this wpuld give a significant improvement (nearly 2.5 secs of 0-60 on the 105bhp touran and some overtaking speed as well)

Anyway just my opinion chaps