Diesel Re-Mapping, Not 205 Related

[ian010778 21]

Hey guys,

 

I'm thinking about having my 2005 206cc 1.6 HDi FAP re-mapped - anyone have any experience or advice please?

 

As usual, t'interweb has served up lots of different info' and I quite like the look of this place http://www.evolutionchips.co.uk/ (only because I like the site, they *seem* to be reputable/knowledgeable and they offer lots of protection/guarantees) but I really don't have any experience in this area and as this car is our joint daily drive I really can't afford to experiment and risk cocking it up!

 

What's making me skeptical is that the Evolution people claim they can release over 30bhp and increase torque by over 50nm/2 whilst increasing efficiency too - is this really a realistic expectation or just pie in the sky? You know the saying 'if it seems too good to be true...' but I must admit I've only recently begun to understand my XU5JA so the diesel's still smoke and mirrors to me.

 

They also talk about removing the Diesel Particulate Filter (DPF) and Exhaust Gas Recirculation (EGR) valve. We've recently had our particulate renewed and after talking to the shop I'm under the impression that this is integral to stopping build up in the Cat and therefore it benefits the emissions and efficiency so cost aside, why else would I want to have this removed and also why would it be advantageous to remove the EGR valve? The Evolution people only cite 'costly servicing' as the reason for making these changes but they don't say how these modifications affect performance and/or efficiency.

 

The main reason's I want to do this are firstly because it bugs me driving in heavy traffic as it's really unforgiving if I'm not quite in the right gear at slow speeds; secondly, we already get over 500 miles to a tank on a run and I want to see just how efficient I can make it. I'm not so fussed for mega bhp and torque throughout the mid-range as it's spritley enough as is and plus I have my 205 if I want to go for a blast .

 

 

Ian P.

[Anthony 1,003]

DPF's seem to be an expensive timebomb on modern diesels, particularly ones that aren't routinely driven longish distances. If you've an option to remove it, I'd bin it without hesitation assuming there's no warranty considerations, especially as I seem to recall the special fluid that Peugeot use is priced like it is made from the tears of baby dolphins...

 

EGR valves seem to commonly fail as well, although they're at least not as costly. Again, I can't see any reason not to remove it given that if anything it reduces smoke and the amount of muck in the inlet - it's blanked off on my 306 HDi.

 

Remember that the only MOT emissions test a diesel has to pass is a smoke test.

[welshpug 1,657]

DPF's can be removed and programmed out of the ECU's.

 

The gains they state are perfectly feasible these days, even on the smaller engines they are operating well within their limitations what with advancements in technology and materials, with a turbo engine it really is just a case of more air and more fuel = bigger bang (or woof in the case of a diesel! ) you of course have to ensure the inlet charge temperatures don't rise too far, hence the additions of larger/more efficient intercoolers.

 

 

As to where you could get the work done, not a clue, I'm still in the old world of mechanical engines

Edited August 20, 2012 by welshpug

[S@m 156]

Obviously removing the DFP and EGR would raise your emissions and since road tax is based on emissions you would be paying too little tax - unsure how anyone would ever find out but its worth considersation.

 

On a side note, the dreaded DFP fluid is roughly £33 a litre from peugeot. Considering its made largely of urea then thats alot of money for a bottle of piss!

 

Sam

Edited August 20, 2012 by Sam306

[Anthony 1,003]

Given that tax is calculated on CO2 emissions I'm not sure how much it would change - much of the extra emissions nonsense on diesel engines is for reducing particulates (DPF) and NOx (EGR) polutants, which are critical for Euro x emissions standards but not as I understand directly related to CO2.

 

Anyway, it's nonsense, as without testing the car on the same standardised check - which would never happen - it would be impossible to tell. The only emissions test that diesel engine vehicles in the UK face is a smoke test.

[ian010778 21]

DPF's seem to be an expensive timebomb on modern diesels, particularly ones that aren't routinely driven longish distances. If you've an option to remove it, I'd bin it without hesitation assuming there's no warranty considerations, especially as I seem to recall the special fluid that Peugeot use is priced like it is made from the tears of baby dolphins...

 

Obviously removing the DFP and EGR would raise your emissions and since road tax is based on emissions you would be paying too little tax - unsure how anyone would ever find out but its worth considersation.

 

Cheers all - we did have the bag of piss replaced at last service and yes it was very expensive, this is why I'm a bit reluctant to have the DPF removed as I know I've got a full bag on board. Also, one thing I've always liked about the car is that it never smokes and I don't want to risk it becoming smokey by removing the DPF and EGR but seems as though there's conflicting opinion here.

 

I hadn't considered the tax implications - not sure how this would work. Maybe my best bet is get it re-mapped but leave the DPF and EGR in place? The company I've seen say that they do an individual map for each vehicle so i guess they would just map it accordingly.

 

I guess the real question is who does everyone use to map their 205 as I think someone who's reputable/trusted on this forum would be a good place to start.

 

Ian.

[Baz 421]

Diesel tuning is a different kettle of fish to a point though! Sounds like the place you're referring to is better than most if they'll do a map to suit each individual car as otherwise it's just the usual generic flash-mapping.

[pug_ham 244 3 Cars]

Ian, as your based in Leicester it might be worth getting in touch with Pro Steve through is website http://www.hdi-tuning.co.uk/index.html he has a good rep through several of the forums.

 

I don't think you'll need to worry about the tax implications, the emissions are calculated per car model from the factory & not per individual car at a test centre, as long as its not horrendously smokey all the time you won't draw attention to your car & its no cause for concern.

 

I'm running my 306 hdi with the egr system removed & intend to get the egr deleted from my map when I've got the correct leads so it doesn't log a soft fault in the ecu. (no eml light but stores a fault code).

 

g

[welshpug 1,657]

removing egr if anything will make it smoke less.

[pug_ham 244 3 Cars]

removing egr if anything will make it smoke less.

Just putting a stainless blanking plate between the egr pipe & lnlet manifold makes it smoke less, don't even need to fully remove it.

 

Mines only completely removed because the engine was out of the car, trying to unbolt it from the exhaust manifold in situ is almost impossible.

 

g

[ian010778 21]

Thanks all,

 

Really helpful as always, I'll have a chat with Pro Steve soon.

 

 

Ian.

[Henry Yorke 269 3 Cars]

I have had good experiences through Gav Robinson via www.thedervdoctor.co.uk, though he specialises more in VAG tuning now. However he has all the right kit to programme all sorts of ECUs and flash them