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361 posts

Ultimate Geek
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Topic # 243781 31-Dec-2018 18:02
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Has anyone here had any experience in getting a diesel vehicle remapped? I know diesel is a dirty word around here amongst all the EV and hybrid owners but I have a diesel SUV and tow a small caravan. It could do with a little more torque when pulling the caravan over the hills.

 

 

 

I've done a little research and I'm looking for a proper ECU remap as opposed to an add on box that just modifies the signals to fool the ECU. This is one company I've found that looks the goods but I'm keen to know if anyone else has any first hand experience.

 

 

 

My car is Skoda Yeti with the 2.0 TDI 103Kw engine if that makes a difference.

 

 

 

https://chiptuning.co.nz

 

 


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Uber Geek
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  Reply # 2152750 31-Dec-2018 18:12
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I have heard positive things about https://www.superchips.co.nz/

 

No personal experience though.


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  Reply # 2152752 31-Dec-2018 18:29
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Autopassion.co.nz (also chiptuning.co.nz) remapped the ECU on my Smart and did a good job, have a chat with them or take a look n their Facebook page which usually lists the cars they've been tinkering with lately.

 

Anything turbo'd is easiest to get more out.

 

Mark

 

 


 
 
 
 


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  Reply # 2152753 31-Dec-2018 18:36
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Paging @Coil

Also get the EGR system deleted while you are doing the remap. Better fuel economy (and therefore lower carbon emissions) from doing so.





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  Reply # 2152757 31-Dec-2018 19:05
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Euro Surgeon if you're in Auckland. Superchips if you're anywhere else.

I'm looking into doing my 320d and both of these have brilliant feedback in the BMW world.

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  Reply # 2152762 31-Dec-2018 19:27
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I thought the other ones that plugin and were able to be resetbefore taking it for a service were the preferred way in case of a factory reset
What would a remap to you 103kw? I’m starting at 176kw.




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Ultimate Geek
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  Reply # 2152765 31-Dec-2018 20:22
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Thanks for the responses so far.

For a diesel, those plug in boxes normally just add fuel through filling the ECU with modified signals. Which does produce more power but also comes at the expense of drivability and normally leads to a fouled up DPF. The preferred option is a complete ECU remap where fuel, boost and other parameters are also controlled.

For my car (103kw and 320Nm) I’d be expecting close to 130kw and 400Nm after the remap. It won’t set records down the quarter mile but should be much more responsive especially pulling the caravan.

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  Reply # 2152800 31-Dec-2018 23:48
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Senecio: Thanks for the responses so far.

For a diesel, those plug in boxes normally just add fuel through filling the ECU with modified signals. Which does produce more power but also comes at the expense of drivability and normally leads to a fouled up DPF. The preferred option is a complete ECU remap where fuel, boost and other parameters are also controlled.

For my car (103kw and 320Nm) I’d be expecting close to 130kw and 400Nm after the remap. It won’t set records down the quarter mile but should be much more responsive especially pulling the caravan.


Definitely make sure that you get the EGR deleted. As doing so also improves the partial load driveablity. And can give significant fuel economy gains. The krapi Mitsubishi l300 at my old work went from 325 to 450Km per tank of diesel. Just from an EGR delete







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Ultimate Geek
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  Reply # 2152820 1-Jan-2019 05:32
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Cheers. I’ll do a bit more reading on the EGR delete.

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  Reply # 2152859 1-Jan-2019 10:24
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Aredwood

Also get the EGR system deleted while you are doing the remap. Better fuel economy (and therefore lower carbon emissions) from doing so.

 

Wouldn't deleting an EGR increase (maybe significantly) NOx emissions therefore possibly off setting the lower eco foot print from possible fuel savings?

 

Our modern diesel car has a EGR and DPF

 

 

 

 

 

 

 

 

 

 

 

 


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Ultimate Geek
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  Reply # 2152864 1-Jan-2019 10:33
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Senecio: Thanks for the responses so far.

For a diesel, those plug in boxes normally just add fuel through filling the ECU with modified signals. Which does produce more power but also comes at the expense of drivability and normally leads to a fouled up DPF. The preferred option is a complete ECU remap where fuel, boost and other parameters are also controlled.

For my car (103kw and 320Nm) I’d be expecting close to 130kw and 400Nm after the remap. It won’t set records down the quarter mile but should be much more responsive especially pulling the caravan.


I would've thought 320Nm was quite decent, what does the caravan weigh? Are there any transmission limitations to upping the power?

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  Reply # 2152922 1-Jan-2019 11:55
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all the guys who modify vw petrol engines will also do the tdis.

 

most stage 1 tunes will get you around 20% more power and torque.

 

they can also do dsg remaps.


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  Reply # 2152935 1-Jan-2019 13:08
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If these remaps really produce the claimed results then why don't the manufacturers do it at the factory? There must be some sort of significant compromise involved, most likely environmental in nature.

 

It will probably also void your warranty.


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  Reply # 2152944 1-Jan-2019 13:37
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alasta:

 

It will probably also void your warranty.

 

 

Using the numbers quoted (103kW, 320Nm), it's likely a 2009-11 model, so probably none to worry about.

 

Like someone else suggested, I'd be more worried about the drivetrain being able to handle the extra torque.


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  Reply # 2153058 1-Jan-2019 19:37
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Given that this is geekzone I thought I might as well run the DIY angle. 

 

There are a couple of options within 'proper' ECU mapping that are worth considering, but it depends how deep you want to immerse yourself. 

 

Options:

 

1: Get someone else to do the full remap process for you; OR

 

2: look offshore for ECU swap or DIY mapping

 

In my opinion the Europeans are lightyears ahead in terms of skills and understanding of the diesel remapping (they've been cheating for years ;-)) . I for my sins have a TD5 Landrover and have landed on a mapping company from Portugal that email me the maps and I load them myself. Via email you can tweak maps for your particular need. Can focus on towing, economy, torque, acceleration pedal sensitivity etc etc. But be warned once you start its hard to stop. Next will be an upgraded intercooler. 

 

Companies that appear to have a reasonable reputation for VAG are:

 

1: blacksmoke.co.uk; and

 

2: darksidedevelopments.co.uk

 

Have not used these but there appear to have a solid following. So no recommendations just more ideas of what could be options for the Skoda.




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Ultimate Geek
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  Reply # 2153059 1-Jan-2019 19:45
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alasta:

If these remaps really produce the claimed results then why don't the manufacturers do it at the factory? There must be some sort of significant compromise involved, most likely environmental in nature.


It will probably also void your warranty.



2013 model and I service it myself since the warranty ended so that is not something I’m concerned about.

I look at it the other way. It’s the manufacturers that have to make most of the compromises when building a car that will appeal to the masses which leaves quite a lot of headroom for the after market tuners to take advantage of safely.

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