Vehicles listed by % increase in BHP after ECU remap?
Vehicles listed by % increase in BHP after ECU remap?
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lone_gunman

Original Poster:

2 posts

54 months

Friday 6th May 2022
quotequote all
Is there an accessible, hopefully definitive list of makes, models of vehicles which shows their typical percentage increase in BHP and torque after an ECU remap?

Obviously, I can type in a specific make and model, or even a registration number, on any number of websites to get the gains for that particular vehicle. But it would be much easier if I could see all popular and current makes and models (in the UK at least) as a list, spreadsheet or whatever.

That way I could make an informed decision about my next car/van, taking into account its potential for improved performance and drivability?

Cheers for any suggestions smile



Wills2

29,873 posts

206 months

Friday 6th May 2022
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Most of the big tuners have a search function that shows you the potential of each car that they tune.

As an example:

https://www.celtictuning.co.uk/






Pixelpeep 135

9,050 posts

173 months

Friday 6th May 2022
quotequote all
lone_gunman said:
Is there an accessible, hopefully definitive list of makes, models of vehicles which shows their typical percentage increase in BHP and torque after an ECU remap?

Obviously, I can type in a specific make and model, or even a registration number, on any number of websites to get the gains for that particular vehicle. But it would be much easier if I could see all popular and current makes and models (in the UK at least) as a list, spreadsheet or whatever.

That way I could make an informed decision about my next car/van, taking into account its potential for improved performance and drivability?

Cheers for any suggestions smile
Are you looking for what cars see the most gains from a remap ?

If so, i would say the x35i BMW N54 N55 306hp variants - 306 to 380 with a stage 1 map, great sound too

Truckosaurus

13,305 posts

315 months

Friday 6th May 2022
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Most bang-for-buck remap is probably one of the de-tuned BMW 2-litre petrol or diesels (eg. 116d goes from 114bhp to 179bhp according to the Celtic website)

donkmeister

13,121 posts

131 months

Friday 6th May 2022
quotequote all
If we're going for best percentage gains, isn't there a povvo 1er that can have more or less double the BHP due to the hardware being identical to a much more powerful variant?

I'd also suggest the 2.8T z28nel used by Vauxhall is a notable mention; the 227bhp variant could be remapped to 300bhp, as the hardware was identical to the 280bhp version in VXR and Aero products.

jjones

4,492 posts

224 months

Friday 6th May 2022
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celtic tuning stage 1, m140i. 335 to 431 is +96bhp

HustleRussell

26,703 posts

191 months

Friday 6th May 2022
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What is the value of knowing the BHP and torque increase without any other supporting info? You cannot judge tuning work by the figures.

Jazoli

9,701 posts

281 months

Friday 6th May 2022
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Truckosaurus said:
Most bang-for-buck remap is probably one of the de-tuned BMW 2-litre petrol or diesels (eg. 116d goes from 114bhp to 179bhp according to the Celtic website)
Its probably the 2.0tdi found in most VW's from vans to luxury saloons, 75bhp to around 190bhp for a simple remap, 155% increase.

lone_gunman

Original Poster:

2 posts

54 months

Friday 6th May 2022
quotequote all
HustleRussell said:
What is the value of knowing the BHP and torque increase without any other supporting info? You cannot judge tuning work by the figures.
With respect, I didn't say I was looking only for the BHP and torque figures, what I said was that it would enable me to "...make an informed decision about my next car/van, taking into account its potential for improved performance and drivability?"

wpa1975

14,845 posts

145 months

Friday 6th May 2022
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I would be careful in just looking at figures, I would do a lot of research into the company and feedback received.

Very real risk of engine damage if the map is not done correctly.

kambites

71,682 posts

252 months

Friday 6th May 2022
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How long do you want it to last after the remap and do you want it to remain even vaguely road legal in terms of emissions?

legless

2,063 posts

171 months

Friday 6th May 2022
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donkmeister said:
If we're going for best percentage gains, isn't there a povvo 1er that can have more or less double the BHP due to the hardware being identical to a much more powerful variant?

I'd also suggest the 2.8T z28nel used by Vauxhall is a notable mention; the 227bhp variant could be remapped to 300bhp, as the hardware was identical to the 280bhp version in VXR and Aero products.
Be careful with this though. Just because an engine is apparently the same doesn't mean that it is.

Take the venerable VW EA888 2.0. Fitted to both the Golf GTI and the Golf R. Completely identical engine, apart from the pistons, the cylinder head, the injectors, the turbocharger and the lubrication.

I've read in several places that BMW use different grades of pistons for the different power levels too.

wpa1975

14,845 posts

145 months

Friday 6th May 2022
quotequote all
legless said:
I've read in several places that BMW use different grades of pistons for the different power levels too.
I am sure your correct, I seem to remember from a thread on here with the guy that melted a piston after a remap it was discussed along with the lack of piston cooling jets on the lower power versions.

Ouroboros

2,371 posts

70 months

Friday 6th May 2022
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I was thinking how many remap their cars and do no other mods.

I've actually had cars that were more fun before remapping.

NMNeil

5,860 posts

81 months

Friday 6th May 2022
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kambites said:
How long do you want it to last after the remap and do you want it to remain even vaguely road legal in terms of emissions?
You don't for a moment honestly believe that they care how much they poison the air for everyone else do you? rofl