BSI and Mileage
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BSI and Mileage
I swapped by BSI and ECU and key chip over a little while ago to install cruise control, which is great, but by doing this it added almost 200K miles to the clock, which isnt accurate, my car has only done just over 100k
if i swapped all that stuff back would my mileage revert back to the correct amount or will it add it on again?
if i swapped all that stuff back would my mileage revert back to the correct amount or will it add it on again?
2000 2.0 HDI Estate GTX 90 bhp
- Doggy
- Mod with a 2.2 HDi, De-Fapped!
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Re: BSI and Mileage
I believe a copy of the mileage is stored in the clock & another in the BSI. It should copy BSI > clock, when it detects they don't match, but for some, (French), reason it adds them together, (which would be OK if it was a new clock).
If you've got the patience, I guess you could keep swapping 'til it goes back round to something like 100K
If you've got the patience, I guess you could keep swapping 'til it goes back round to something like 100K

2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
- Bailes1992
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Re: BSI and Mileage
Wouldnt only take about 10 timesdogslife wrote:I believe a copy of the mileage is stored in the clock & another in the BSI. It should copy BSI > clock, when it detects they don't match, but for some, (French), reason it adds them together, (which would be OK if it was a new clock).
If you've got the patience, I guess you could keep swapping 'til it goes back round to something like 100K

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: BSI and Mileage
You would be risking damaging the BSI and ECU doing that...
<steve_earwig> I think this forum is more about keeping our cars going with minimal outlay than giving our cars more reason to go bang
Re: BSI and Mileage
hmmmn, I've got my MOT due at the start of feb, i dont want the wrong mileage recorded on the certificate, so i may try the swapping over method and see if it corrects it, provided they are not programmed to display an error message after 99999999 miles 

2000 2.0 HDI Estate GTX 90 bhp
- Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: BSI and Mileage
It wasn't meant as a serious suggestion - I have no idea what happens after 999,999 
One pug I nearly bought mysteriously changed itself from 80,000 to 240,000 one night. Taking this with a fairly big pinch of salt, I did some googling & discovered it's not unheard of. Some V6's have done it too. Pug tech insists its due to using the wrong spark plugs.....
Don't know if they have an explanation for diesels.

One pug I nearly bought mysteriously changed itself from 80,000 to 240,000 one night. Taking this with a fairly big pinch of salt, I did some googling & discovered it's not unheard of. Some V6's have done it too. Pug tech insists its due to using the wrong spark plugs.....
Don't know if they have an explanation for diesels.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
Re: BSI and Mileage
i switched the BSI back today and the mileage didnt revert but it didnt add another 100k on either, I've inherited 200k miles
michelin will be very pleased to hear about how long their tyres last above the legal limit

michelin will be very pleased to hear about how long their tyres last above the legal limit
2000 2.0 HDI Estate GTX 90 bhp
Re: BSI and Mileage
hey, it will be a nice Idea if you could change it again and again, until the miles show 999.999 and we can see what will display after that? a new milleage? count from 000.000????
anyone have tried it??? it sounds very interesting
anyone have tried it??? it sounds very interesting
Re: BSI and Mileage
Very interesting! Wonder why that isMatt wrote:i switched the BSI back today and the mileage didnt revert but it didnt add another 100k on either, I've inherited 200k miles![]()
<steve_earwig> I think this forum is more about keeping our cars going with minimal outlay than giving our cars more reason to go bang
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- 2.0 16v
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Re: BSI and Mileage
Hi Mate, may be easier to simply take the car to one of the mileage correction guys who will be able to correct both the BSI and the clock mileage for you. If the BSI data stored is higher than the clock youre fitting then they wont match up properly as the other guy said.....
Puggy
Puggy