New MAF fitted and initial reaction was OH MY GOD why didnt i get this done before??
Admittedley the price for a new MAF is ball achingly steep but hey thats BMW for you, Reckon she would pay back in economy within 6 months even with my weekend use(oddly i tend to take her during the week too!)
pulls better from 3k and even better at the magic 4k +
Now to get me a new key
__________________
Steve Mac
_________________
If knowledge is power,,,how brainy are my Baby`s
2001 Le Mans beast ///M5
1995 Fjord grey M5 she's a lady
2002 Black Beauty 320i Sport!!
decisions decisions
Last edited by Steve Mac; 11th February 2009 at 01:08.
If my car's survived its recent oil leak there's a new MAF on order.
The cost is shocking to the point of guilt, but she's definitely over-fuelling at low speed (God knows what it's doing at high speed) and aside from keeping the engine in best condition I'm hoping for a decent fuel saving
__________________
If you focus on quality, you don't need to worry about quantity.
I have found a shop in Boulder Colorado that overhauls the rectangular electrical style M5 MAF for around 200 USD. I just sent him mine and will report back with the results. They have developed their own wire element that is supposed to be more robust that OEM.
This could be very benificial to the M5 crowd. Even shipping from Europe and the 2 day turn around for the rebuild would be about 1/3 the price of a new one.
I should get mine back next week and will follow up.
I replaced the MAF on my 3.6 about 4 months ago at around 135k miles. The car feels much smoother and more powerful now, part throttle response has significantly improved. Fuel economy has improved but not massively (around 0.5-1.0 mpg.) All in all expensive but worth it.
__________________
'90 E34 M5 3.6 Sterling Silver
'03 E39 540i Sport Touring Mora Mettalic
'95 E34 525i Petrol Mica SOLD
'05 KTM 990 superduke
I changed mine as well (3.8) at 97k miles, and noticed no change over a cleaned "error free" older MAF.
I will be testing out the two different MAF's and compare acceleration to see if any difference can be measured.
Also, I don't believe the MAF plays a big role above 4k rpms but I may be wrong...
Was there anything else taken care of during the service (plugs, injector cleaning, etc.?).
Was the battery disconnected?
Sometimes it's a combination of factors that produce results not just a single item.
Also, I don't believe the MAF plays a big role above 4k rpms but I may be wrong...
Failed hot wire mass metering units when worn will give incorrect voltage input
to DME.
Typically, they will run the engine rich @ stoich leading to poor part throttle fuelling & pick up.
At WOT , the result can be dangerously the opposite with lean AFR, leading
to potential engine damage.
there's a new MAF on order. 
SOLD 
Linear Mode
