Remapping - is it worth it?
Remapping - is it worth it?
Author
Discussion

willibum

Original Poster:

81 posts

228 months

Tuesday 11th March 2014
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I don't know if this has been covered before but remapping is it worth it or just snake oil?
They claim that you get more BHP and better fuel economy so why don't manufacturers just do it when building the car? Does it effect warranty or do anything untoward to engine etc?

KarlMac

4,626 posts

170 months

Tuesday 11th March 2014
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Seems to be worth it on mondern turbo engines where the base map is set with a mind on emissions and economy.

Bear in mind to see the best results from mapping you'll need supporting hardware. Normally induction kit and larger intercooler as a start

Make sure you go to a marque specialist too, not one of these man in a van type jobs.

73mark

774 posts

156 months

Tuesday 11th March 2014
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My mechanic said don't do it on my bmw,he said it will do damage to your engine

Hooli

32,278 posts

229 months

Tuesday 11th March 2014
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KarlMac said:
Seems to be worth it on mondern turbo engines where the base map is set with a mind on emissions and economy.

Bear in mind to see the best results from mapping you'll need supporting hardware. Normally induction kit and larger intercooler as a start

Make sure you go to a marque specialist too, not one of these man in a van type jobs.
It's very common in the bike world even without changing bits like exhausts & intakes. The standard maps often have flatspots due to noise regs & emissions for type approval which can be smoothed out.

aspirated

2,540 posts

175 months

Tuesday 11th March 2014
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If you want the most for your money with your remap and are only planning to lightly mod your car, make sure you change the filters/exhaust before a remap.

Spare tyre

12,555 posts

159 months

Tuesday 11th March 2014
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sometimes cars are restricted by software to meet tax band / emission classes

My old 406 that i sold with 330 on the clock with 90bhp has been remapped by the new owner to 123bhp

he says its a different car, no idea what its doing to the clutch mind

loose cannon

6,057 posts

270 months

Tuesday 11th March 2014
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Dam right doggy !
The question is why wouldn't you ?
Well Other than warranty etc

roadend1981

190 posts

187 months

Tuesday 11th March 2014
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In the 2 experiences ive had,one a fabia vrs,and the octavia vrs,the cars performance was transformed,and well worth the money.

zeduffman

4,316 posts

180 months

Tuesday 11th March 2014
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In a word, yes: http://www.youtube.com/watch?v=2KfMY96v_Gc

I had started to type up a large-ish reply, but then I realised this topic has been done to death on the internet and videos tend to be better received than an essay.

V8RX7

28,982 posts

292 months

Tuesday 11th March 2014
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For turbo cars - Definately

Non turbo - in most cases, not worth it

Cerbieherts

1,652 posts

170 months

Tuesday 11th March 2014
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Do your research first. While some companies offer a decent product, many of them are pretty generic maps which offer little or nothing in the way of performance or cause running problems...

magooagain

13,424 posts

199 months

Tuesday 11th March 2014
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Look for a mapper that is an expert in mapping your car of choice. He will know the ecu inside out.

Agree about the fact that turbo cars work very well with a re-map.

Monty Python

4,813 posts

226 months

Tuesday 11th March 2014
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The standard map on a car has to take into account the variations in climate and fuel quality in the all the markets it's sold, so it tends to be a safe "average".

Is it worth it? It depends why you want to do it. If you want more power and torque from a FI engine then the answer is yes. On a NA engine then the gains are more modest. If you want it for better economy then probably not, as it will take a fair few miles to recoup the cost. Plus, on top of this, you have to factor in the extra insurance cost and the effect it will have on any warranty you have.

As for the "damage" to BMW engines, that's a load of rubbish, as is the changing filters/exhaust.

If you want to see what can be done, have a read of this: http://www.remapsuk.com/blog/the-final-word-on-the...


Ved

3,949 posts

204 months

Tuesday 11th March 2014
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20% extra power and 15% better economy on mine. No drawback so far.

aka_kerrly

12,505 posts

239 months

Tuesday 11th March 2014
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V8RX7 said:
For turbo cars - Definately

Non turbo - in most cases, not worth it
Not strictly true, on NA cars you aren't always mapping for ultimate HP gains which appears to be the case with some turbo maps.

On NA it is often a case of optimising timing/fueling across the rev range to improve power delivery or if there are additional breathing/ internal modifications features like increased rev limiters or anti lag can be implemented.

griffin dai

3,341 posts

178 months

Tuesday 11th March 2014
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On a turbo car I recon 100% worth it for the extra oomph. N/A car I'd probably leave until other mods have been done as you don't get that much extra power/torque but would still get it done. Also 100% recommend upgrading the brakes & suspension to cope with the extra power, pointless having 40% odd extra power then you can't stop or make it around the bend.

I 'chipped' my old Renault 19 16v around 17/18 years ago, tbh I didn't notice hardly any difference, maybe a tad quicker/smoother in mid range but nothing to shout about.....£650 to take it from 137 to 151bhp!!!! Gutted!
My old E55 AMG was also remapped along with a few intake & exhaust mods, even then the increase was't huge, they're 354 standard and took it to 381. Still very quick but you just don't get as much gains with a N/A engine frown

I've remapped a few of my turbocharged cars and it's been well worth it. I've had this Saab remapped and it's taken it from 250 to 320bhp and just over 400ft/lbs. Its a huge increase from just a remap (especially the torque where it matters!) for £435. Worth every penny and imo it really needed it as they're not that quick standard.

Just do your research on the owners forums and find the best map to suit and which come recommended or more important which should be avoided. Not all maps are the same, some give bags of low down torque then run out of puff sooner some more conservative lower down to save the gearbox from exploding, some more of an even spread across the range etc etc so really depends what your after.

Prices vary as does how the map is loaded from car to car. I've had to take cars to the mappers to be done, some 'love mapped' on the dyno, some live mapped on the road, some done by post by simply swapping over ECU's or as with this Saab it's done via email with me sat in the drivers seat with my laptop plugged into the cars obd2 port.

What car is it btw?

willibum

Original Poster:

81 posts

228 months

Tuesday 11th March 2014
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it is a BMW 1 Series 2 litre petrol.

LiamM45

1,035 posts

209 months

Tuesday 11th March 2014
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My Astra is getting mapped on Thursday, I can't wait!

Op, on turbo petrol/diesels, definitely worth it. Just do your research and find a reputable company to do it, there's a lot of 'tuners' out there who simply do not have a clue and can cause serious damage.

CB2152

1,555 posts

162 months

Tuesday 11th March 2014
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griffin dai said:
'love mapped'
Intentional? hehe

Remapping - worth it? Definitely on a turbo car from my experience, possibly on an N/A car. Just make sure any hardware that needs upgrading to cope has been suitably upgraded. This tends to vary from model to model...