Newby - Pros & Cons of Re-mapping?
Moderator: Moderators
Newby - Pros & Cons of Re-mapping?
Hi there
I'm a recent owner of a 406 saloon 2.1TD Executive 110 bhp 151,000.
I'm tempted by the prospect of having a re-map done (I'm told because of age of car I'll also need a chip change).
I'm told and I quote 'A stage 1 remap will take power from 110 bhp to 137 bhp with an extra 70 nm of extra torque. If you drive the extra torque effectively you should see a 10% improvement in MPG'.
Is this all realistic?
What is the general consensus on whether these re-maps are worthwhile on this type of car? I ask as my regular mechanic was quite scathing in terms of extra forces and tolerances car is expected to deal with after re-map?
Your thoughts please?
Many thanks
Steve
I'm a recent owner of a 406 saloon 2.1TD Executive 110 bhp 151,000.
I'm tempted by the prospect of having a re-map done (I'm told because of age of car I'll also need a chip change).
I'm told and I quote 'A stage 1 remap will take power from 110 bhp to 137 bhp with an extra 70 nm of extra torque. If you drive the extra torque effectively you should see a 10% improvement in MPG'.
Is this all realistic?
What is the general consensus on whether these re-maps are worthwhile on this type of car? I ask as my regular mechanic was quite scathing in terms of extra forces and tolerances car is expected to deal with after re-map?
Your thoughts please?
Many thanks
Steve
Re: Newby - Pros & Cons of Re-mapping?
where are you having this done?
whats the cost?
i looked at this but there are very few systems for the 2.1 and the ones i found didnt involve chip tunning as i didnt think the 2.1 had a chip in the system[but i could be wrong].
whats the cost?
i looked at this but there are very few systems for the 2.1 and the ones i found didnt involve chip tunning as i didnt think the 2.1 had a chip in the system[but i could be wrong].
- Bailes1992
- Moderator
- Posts: 4292
- Joined: Mon Dec 24, 2007 4:13 pm
- Location: Bridgend, South Wales
Re: Newby - Pros & Cons of Re-mapping?
The 2.1 is fully ecu controlled much like the HDi.
You should see an improvement in fuel economy day to day as you won't be working the engine as hard as there will be more torque low down.
You should see an improvement in fuel economy day to day as you won't be working the engine as hard as there will be more torque low down.
2020 BMW 520d MSport Touring My Daily
2017 Dacia Logan MCV 1.5DCi Laureate Wifes
1996 Land Rover Defender 90 County SW 300TDi My Toy
2003 Ford Mondeo ST220 3.0 V6 My Other Toy
2017 Dacia Logan MCV 1.5DCi Laureate Wifes
1996 Land Rover Defender 90 County SW 300TDi My Toy
2003 Ford Mondeo ST220 3.0 V6 My Other Toy
Re: Newby - Pros & Cons of Re-mapping?
omega wrote:where are you having this done?
whats the cost?
i looked at this but there are very few systems for the 2.1 and the ones i found didnt involve chip tunning as i didnt think the 2.1 had a chip in the system[but i could be wrong].
Hi Omega
The place I may have it done is http://avontuning.co.uk/ on the outskirts of Bristol. Polite chap Gareth Jones seems to know what he's talking about.... quote in my original post is what he said.... whaddya reckon?
Steve
Re: Newby - Pros & Cons of Re-mapping?
Thanks BailesBailes1992 wrote:The 2.1 is fully ecu controlled much like the HDi.
You should see an improvement in fuel economy day to day as you won't be working the engine as hard as there will be more torque low down.
48 mpg is a real achievement, and your footer about 'expecting' mothers made me laugh!
Steve
- Bailes1992
- Moderator
- Posts: 4292
- Joined: Mon Dec 24, 2007 4:13 pm
- Location: Bridgend, South Wales
Re: Newby - Pros & Cons of Re-mapping?
48mpg is pretty crap actually. Unfortunatley the 90bhp HDi I have has to be worked hard to make it move.Steveo wrote:Thanks BailesBailes1992 wrote:The 2.1 is fully ecu controlled much like the HDi.
You should see an improvement in fuel economy day to day as you won't be working the engine as hard as there will be more torque low down.
48 mpg is a real achievement, and your footer about 'expecting' mothers made me laugh!
Steve
I reckon with a good remap I could get an extra 10mpg but being 19 and already forking out £2400 in the last 12 months for insurance, a remap isnt an option at the moment!
I liked the expecting thing too... I dunno where I saw it too

2020 BMW 520d MSport Touring My Daily
2017 Dacia Logan MCV 1.5DCi Laureate Wifes
1996 Land Rover Defender 90 County SW 300TDi My Toy
2003 Ford Mondeo ST220 3.0 V6 My Other Toy
2017 Dacia Logan MCV 1.5DCi Laureate Wifes
1996 Land Rover Defender 90 County SW 300TDi My Toy
2003 Ford Mondeo ST220 3.0 V6 My Other Toy
Re: Newby - Pros & Cons of Re-mapping?
Bailes1992 wrote:48mpg is pretty crap actually. Unfortunatley the 90bhp HDi I have has to be worked hard to make it move.Steveo wrote:Thanks BailesBailes1992 wrote:The 2.1 is fully ecu controlled much like the HDi.
You should see an improvement in fuel economy day to day as you won't be working the engine as hard as there will be more torque low down.
48 mpg is a real achievement, and your footer about 'expecting' mothers made me laugh!
Steve
I reckon with a good remap I could get an extra 10mpg but being 19 and already forking out £2400 in the last 12 months for insurance, a remap isnt an option at the moment!
I liked the expecting thing too... I dunno where I saw it too
Cheers Bailes
There are few disadvantages to being young, but £2400/year in insurance has got to be one of them!
Steve
- highlander
- PowerFlow Shill
- Posts: 3548
- Joined: Sun Nov 09, 2008 5:03 pm
- Location: Aberdeen
Re: Newby - Pros & Cons of Re-mapping?
Remap it and don't mention to your insurers. Nobody checks the map on the factory ECU.
If you replace the ECU with an after-market unit, or add one of those Daitek piggy-back ECU modules, and don't declare it, you'll get crucified. The MOT tester will likely fail you for having a piggy-back ECU too, nowadays, but they don't check for software discrepancies.

If you replace the ECU with an after-market unit, or add one of those Daitek piggy-back ECU modules, and don't declare it, you'll get crucified. The MOT tester will likely fail you for having a piggy-back ECU too, nowadays, but they don't check for software discrepancies.
2002 (D9) Peugeot 406 Coupe SE, 2.2 litre Petrol. Scarlet Red/Rouge Ecarlate/Rosso Scarlatto. Black Leather interior. SOLD 
2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.

2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.
Re: Newby - Pros & Cons of Re-mapping?
Thanks Highlanderhighlander wrote:Remap it and don't mention to your insurers. Nobody checks the map on the factory ECU.![]()
If you replace the ECU with an after-market unit, or add one of those Daitek piggy-back ECU modules, and don't declare it, you'll get crucified. The MOT tester will likely fail you for having a piggy-back ECU too, nowadays, but they don't check for software discrepancies.
It sounds like I'm being offered a chip change to the existing ECU - he did say it'd involve some soldering, so I don't think it sounds like I'm being offered an after-market unit (do you?).
And when you say if I don't declare it I'll get crucified, do you mean by insurers if I have an accident?
It's alleged that 90% of insurers don't care or penalise you for getting a re-map done, but I'm sure if this is true or just PR spin put out by the re-mappers...?
Cheers
Steve
- highlander
- PowerFlow Shill
- Posts: 3548
- Joined: Sun Nov 09, 2008 5:03 pm
- Location: Aberdeen
Re: Newby - Pros & Cons of Re-mapping?
If they're physically modifying it, then you should let your insurers know. Give them a call and find out how much it would add to your premium, but just tell them you're only thinking about doing it, and for goodness sake don't tell them it's for performance, tell them its to improve fuel economy (otherwise they will have £ signs in their eyes, cartoon-style).
If it's just a software remap (which is just a matter of writing new values to some registers on the ECU's built-in flash storage) then it's untraceable.
If it's just a software remap (which is just a matter of writing new values to some registers on the ECU's built-in flash storage) then it's untraceable.
2002 (D9) Peugeot 406 Coupe SE, 2.2 litre Petrol. Scarlet Red/Rouge Ecarlate/Rosso Scarlatto. Black Leather interior. SOLD 
2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.

2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.
Re: Newby - Pros & Cons of Re-mapping?
Thanks Highlanderhighlander wrote:If they're physically modifying it, then you should let your insurers know. Give them a call and find out how much it would add to your premium, but just tell them you're only thinking about doing it, and for goodness sake don't tell them it's for performance, tell them its to improve fuel economy (otherwise they will have £ signs in their eyes, cartoon-style).
If it's just a software remap (which is just a matter of writing new values to some registers on the ECU's built-in flash storage) then it's untraceable.
I'll check what you've said out first.
Yes, If I do it, I'll wait until I'm about to re-insure in a month or so, so I can have the beneift of choosing an insurer that I can compare with and without prices....i.e. an insurer that won't load for it.
Cheers
Steve
- highlander
- PowerFlow Shill
- Posts: 3548
- Joined: Sun Nov 09, 2008 5:03 pm
- Location: Aberdeen
Re: Newby - Pros & Cons of Re-mapping?
Admiral have been very good with me for modifications. It didn't go up by much when I got the stainless exhaust fitted, and it didn't go up by much when I fitted the alloy wheels.
2002 (D9) Peugeot 406 Coupe SE, 2.2 litre Petrol. Scarlet Red/Rouge Ecarlate/Rosso Scarlatto. Black Leather interior. SOLD 
2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.

2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.
Re: Newby - Pros & Cons of Re-mapping?
I always have to smile when alloys are classed as modding a car, for most people buying a second hand car, if the wheels are the same brand as the car they would never know they weren't standard let alone declare it to their insurers.
If I sold my saloon complete with 16" coupe wheels tomorrow I very much doubt anyone would ask if they were standard.
Same applies to selling a remapped car, if you don't tell the new buyer chances are they would never know.
If I sold my saloon complete with 16" coupe wheels tomorrow I very much doubt anyone would ask if they were standard.
Same applies to selling a remapped car, if you don't tell the new buyer chances are they would never know.
1996 1.9 TD LX (Gone but not forgotten)
2003 2.2 HDI SE
2003 2.2 HDI SE
- highlander
- PowerFlow Shill
- Posts: 3548
- Joined: Sun Nov 09, 2008 5:03 pm
- Location: Aberdeen
Re: Newby - Pros & Cons of Re-mapping?
Well mine aren't Peugeot alloys - they're 19 inch Mille Miglia T12 multispokes 


Beware though, if your 406 didn't have alloys on when it left the factory, and you fit Peugeot alloys to it, that's still considered a modification and the insurers will ream you for it if you have an accident and haven't declared it.



Beware though, if your 406 didn't have alloys on when it left the factory, and you fit Peugeot alloys to it, that's still considered a modification and the insurers will ream you for it if you have an accident and haven't declared it.
2002 (D9) Peugeot 406 Coupe SE, 2.2 litre Petrol. Scarlet Red/Rouge Ecarlate/Rosso Scarlatto. Black Leather interior. SOLD 
2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.

2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.