Hi,

sorry in advance if this is a silly question....I know very little about remaps etc, despite what I've read on here.

I have a Octavia 1.9 diesel 130PD, and to be honest I'm quite happy with the power of it. Is there a way of remapping which gives more emphasis to MPG, or is that a necessary outcome of increasing the power? i.e. you have to have the power increase to increase mpg?

Thanks,

Martin

From what I understand, when you have a remap it increases power, but more importantly torque.

With this extra torque, you dont need to press on the accelerator quite so hard for the same speed as pre-remap, therefore you use less fuel.

So in answer to your question, yes the increase in power is required for better economy. Got to remember though, if you use that extra power, it is more likely to use more fuel!

Thats how I understand it anyway.

I am sure have read that you can get an economy map as opposed to a performance map (it may have been a tuning box). Do a search on here and I'm sure you will find one. I have always thought a switchable re-map with different modes would be perfect. One for normal everyday driving (stock), a performance mode for weekends, then a low boost for economy and winter/snow driving.

In general a remap for more power will give you better economy IF you modify your driving style to make use of the increase in torque by changing gear earlier and not using the extra power for faster driving. Some tuners offer what they call Economy maps but they generally just offfer a lower level of tune.

Follow this link and input your car details in the Performance box - top right - and you should be offered a choice of Economy or Power maps and their power increases will be listed for comparison.

http://www.viezu.com/

Should note that people who have bought their 2 map DIY tuning box have found that the Power map actually gives better economy than the Eco map - but that is only those people who can controll their right foot, power corrupts remember

Edited 16 January, 201016 yr by Octavia5

I originally bought my old 330d BMW with a tuning box and whilst it was stupidly fast, it also killed the engine inside of 12 months. I would never use a box again simply because a good custom mapper makes the changes only to those parts that are needed rather than increasing everything. These boxes tend to put a lot of extra strain on the engine.

I will just be having a custom remap when the time arrives and will probably take it over to Ben @ Shark

In light of the previous post, please search through the forum for the numerous discussions on the differences between analogue tuning boxes, digital tuning boxes and remaps. You shouldn't necessarily just limit yourself to a remap, particularly if it's economy rather than power that you're after. As with everything, you get what you pay for...

If you read my post carefully I am NOT refering to Tuning Boxes but to the relatively new method of DIY tuning where you buy a 1 or 2 proper maps from a reputable tuning company and the maps are loaded on to a Map writer which allows you to write the new map to your ECu or to rewite your original map when needed, ie to get warentee work of service work done.

Viezu and our own Shark are amongst several tuners selling essentially the same map writer with their own maps.

Please read posts carefully before making comments which are not relevant

Economy maps are nothing but a gimmick to be honest, the more useable power you give a diesel, the better it will be on fuel in the long run

If you read my post carefully I am NOT refering to Tuning Boxes but to the relatively new method of DIY tuning where you buy a 1 or 2 proper maps from a reputable tuning company and the maps are loaded on to a Map writer which allows you to write the new map to your ECu or to rewite your original map when needed, ie to get warentee work of service work done.

Viezu and our own Shark are amongst several tuners selling essentially the same map writer with their own maps.

Please read posts carefully before making comments which are not relevant

Perhaps make posts clearer about what you are referring to rather than assuming everyone knows what you are referring to and then jumping down throats?

Just a thought?

Getting back on topic,

What sort of % mpg gain would be reasonable? I realise that this is a very dark art and it would be impossible to guarantee a figure, but what sorts of improvments are people seeing, especially diesel (and PD) owners?

1%?

5%?

10%???

Getting back on topic,

What sort of % mpg gain would be reasonable? I realise that this is a very dark art and it would be impossible to guarantee a figure, but what sorts of improvments are people seeing, especially diesel (and PD) owners?

1%?

5%?

10%???

My Bora PD130 was remapped with the 'fast road' map from ChippedUK as was, Viezu as is now in 2008 and over 20k miles ago.

Can't recommend it highly enough. It's quite simply superb. Just as smooth as before but with lots more throughout the rev range with no real drop off towards the red line. Performance is quite simply superb, economy was immediately improved by upto 10% when driven steady. 60mpg has been achieved with little effort on 70-85mph motorway/A road runs.

If you're ever over in West Yorkshire, you're welcome to have a look.

You'll want it done.

The one thing I would say is that choosing a user-switchable remap system means you get a generic map for 35% more than the cost of a custom remap, based on the Viezu prices:

http://www.viezu.com/product-range/v-switch

(as opposed to One-Click, Bluefin, or any of the other alternatives...)

Now, it might be possible to get a 'tweaked' version of the generic map depending on your tuner, which is likely to be every bit as good as a custom map. But then you'd still need to ask yourself whether you'll really ever make use of the ability to put the car back to its standard map on a regular basis. It's certainly not a way of dodging insurance company premiums for remapped cars, as if they ever suspect the map's been changed they'll just look to see if the ECU's been flashed since the car left the factory.

Another thing to bear in mind is that user-switchable remaps tend to give slightly more conservative power gains than 'permanent' remaps - Viezu reckon 168bhp from their 'power' map; Bluefin 165 - can't comment on One-Click as the Revo site appears to be down. And as has been pointed out, provided you can exercise self-control, you should be capable of seeing the best economy gains from the most powerful remap as you can use the extra torque to your advantage.

I guess what I'm saying is that if better economy is what you're after, paying extra to have a map you can turn off seems to be a non sequitir: you'd have to cover a lot of miles at a much better MPG to justify the added cost!