MAF and Oxygen Sensors
Discussion
Which model? M5? Then you can have the MAFs from the US from performance cafe for $79 a piece. www.performance-cafe.com/product_info.php?products_id=787&osCsid=c8cd3201aedb254e5215461126090ee7
Edit: Just remember to ask them to ship it as airmail for $20, otherwise they will try to ship it for $70 or so.
Edit: Just remember to ask them to ship it as airmail for $20, otherwise they will try to ship it for $70 or so.
Edited by rassi on Tuesday 6th March 20:57
rassi said:
Which model? M5? Then you can have the MAFs from the US from performance cafe for $79 a peace. www.performance-cafe.com/product_info.php?products_id=787&osCsid=c8cd3201aedb254e5215461126090ee7
Edit: Just remember to ask them to ship it as airmail for $20, otherwise they will try to ship it for $70 or so.
Edit: Just remember to ask them to ship it as airmail for $20, otherwise they will try to ship it for $70 or so.
Edited by rassi on Thursday 11th January 15:01
Colour me dense but is that VW part also a fit for the BMW. If so do the VW people sell it cheaper than BMW in THIS country?
Yes, the VW part (genuine Bosch) is the exact fit for the M5 (I fitted a pair 2 months ago). Apparently VW is selling it at cost price due to a class action law suit in the US, for failing MAFs. Don't think you will find it in the UK. Price at a UK BMW dealer upwards of 500 pounds, so even with shipping it is the bargain of the year (I even only paid $59, apparently they put the price up due to demand from M5 owners). Well documented on the M5board.
On a facelift M5 (post September 2000) you will need a 5 pronged T20 security plus torx to get the old MAFs off. Can be difficult to find, but I bought mine ($13)from here www.tdiparts.com/catalog/product_info.php?products_id=401&osCsid=3c739f327516719e62c5a9773e32bbe9
For DIY on cleaning the MAFs, see here www.louv.tv/cars/m5/MAF/
On a facelift M5 (post September 2000) you will need a 5 pronged T20 security plus torx to get the old MAFs off. Can be difficult to find, but I bought mine ($13)from here www.tdiparts.com/catalog/product_info.php?products_id=401&osCsid=3c739f327516719e62c5a9773e32bbe9
For DIY on cleaning the MAFs, see here www.louv.tv/cars/m5/MAF/
Edited by rassi on Thursday 11th January 18:44
rassi said:
Yes, the VW part (genuine Bosch) is the exact fit for the M5 (I fitted a pair 2 months ago). Apparently VW is selling it at cost price due to a class action law suit in the US, for failing MAFs. Don't think you will find it in the UK. Price at a UK BMW dealer upwards of 500 pounds, so even with shipping it is the bargain of the year (I even only paid $59, apparently they put the price up due to demand from M5 owners). Well documented on the M5board.
On a facelift M5 (post September 2000) you will need a 5 pronged T20 security plus torx to get the old MAFs off. Can be difficult to find, but I bought mine ($13)from here www.tdiparts.com/catalog/product_info.php?products_id=401&osCsid=3c739f327516719e62c5a9773e32bbe9
For DIY on cleaning the MAFs, see here www.louv.tv/cars/m5/MAF/
On a facelift M5 (post September 2000) you will need a 5 pronged T20 security plus torx to get the old MAFs off. Can be difficult to find, but I bought mine ($13)from here www.tdiparts.com/catalog/product_info.php?products_id=401&osCsid=3c739f327516719e62c5a9773e32bbe9
For DIY on cleaning the MAFs, see here www.louv.tv/cars/m5/MAF/
Edited by rassi on Thursday 11th January 18:44
Thanks for the info, strangely my torx are six pronged security 2001 model.
The picture on that site shows a tube. Do they come with the tube or is that just to illustrate?
The VW MAFs come with the tube, which is not compatible with the M5. Simply swap over the VW MAFs, only removing the electrical connector from the original MAFs.
See e.g. this thread: www.m5board.com/vbulletin/showthread.php?t=86941&highlight=vw+maf
See e.g. this thread: www.m5board.com/vbulletin/showthread.php?t=86941&highlight=vw+maf
Julian64 said:
Okay MAF's ordered at $70 each put $32 airmail.
I am going to be bloody impressed if these are the right things as two of these in UK BMW land are £500.
I am going to be bloody impressed if these are the right things as two of these in UK BMW land are £500.
The only difference is that the VW MAFs do not have locking tabs, meaning that the MAF connector is only held by friction (but still securely). On the M5board I think at least 100 members already did the swap to VW MAFs without any issues.
Hi, yes and no.
Sensors came as advertised, however they look identical but the last two digits on the serial number are different to mine.
They fitted easily and certainly the car seems to have a lot more high end power which seems to be what everyone says.
The only problem is that I have had some hunting of the engine near idle. If you are driving along and then take the car out of gear the revs go down to idle and then surge between 200rpm and 1000rpm three or four times before they become stable. Twice the engine has actually stalled when doing this.
I disconnected the battery overnight, which was the suggestion given to me to reset the cars adaptives but it has made little difference. The car has covered 2-300 miles since changing them. Early on I changed them back for the old ones and the surging stopped.
So I am a little in a quandry at the mo. Any chance you could read the serial number of the side of yours for me to compare with?
Sensors came as advertised, however they look identical but the last two digits on the serial number are different to mine.
They fitted easily and certainly the car seems to have a lot more high end power which seems to be what everyone says.
The only problem is that I have had some hunting of the engine near idle. If you are driving along and then take the car out of gear the revs go down to idle and then surge between 200rpm and 1000rpm three or four times before they become stable. Twice the engine has actually stalled when doing this.
I disconnected the battery overnight, which was the suggestion given to me to reset the cars adaptives but it has made little difference. The car has covered 2-300 miles since changing them. Early on I changed them back for the old ones and the surging stopped.
So I am a little in a quandry at the mo. Any chance you could read the serial number of the side of yours for me to compare with?
Sure, will have a look this evening.
I had a bit of the hunting at idle in the beginning, but after a long drive it stopped and have since covered some 10.000 km on the MAFs with zero problems. I'd suggest that you need to give them a bit more time to settle in/allow the ECU to readjust.
I had a bit of the hunting at idle in the beginning, but after a long drive it stopped and have since covered some 10.000 km on the MAFs with zero problems. I'd suggest that you need to give them a bit more time to settle in/allow the ECU to readjust.
You could well be right. I'm not at all sure that simply disconnecting the battery overnight had any effect on stored values.
My other BMW's lost their idle completely when the battery was removed for a few minutes or more and didn't get it back till they were up to temp and idling for a while, but this didn't happen with the M5 which acted as if I hadn't even disconnected.
The good news is that the Car has a lot more top end poke. My OBD graph with the old sensors showed the car on flat out throttle to be 70% CLV when it should have been 100%. I was planning on waiting till this had resolved and then connect this weekend to see if I had achieved the magic 100!
My other BMW's lost their idle completely when the battery was removed for a few minutes or more and didn't get it back till they were up to temp and idling for a while, but this didn't happen with the M5 which acted as if I hadn't even disconnected.
The good news is that the Car has a lot more top end poke. My OBD graph with the old sensors showed the car on flat out throttle to be 70% CLV when it should have been 100%. I was planning on waiting till this had resolved and then connect this weekend to see if I had achieved the magic 100!
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