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  1. Need help with SES & codes

    E39 M5 and E52 Z8 Discussion
    Hey Guys - Been having a recurring SES light and codes for a few months. I've searched around and have some leads, but would appreciate any other first hand experiences or knowledge you can share. First occurrence was April 30, got an SES light and checked codes w/a Peake scanner. Got AA, 81...
  2. 2008 M5 - Increased Emissions - 2AFB - Please Help

    E60 M5 and E61 M5 Touring Discussion
    Hello, Sorry for the long post. I have a 2008 M5 with 59,700 miles. The only thing I have done is install the Evolve AlphaN tune and BMC filters over a year ago. Recently, I tried to pass emissions testing but failed due to several systems being "not ready”. Therefore, I decided to flash back...
  3. New Member---M5 E39 Dyno (Need Ideas)

    E39 M5 and E52 Z8 Discussion
    First of all...new member here...from Spain so...sorry for my English level¡¡ I´ve been reading this board for a while...I always loved the E39 M5 but here in my country It´s not easy to find a good unit... Last year I had the chance to buy a good one (06/2000) right now with 125.000 miles on...
  4. HELP! Very rough idle when cold and stalling, with video

    E39 M5 and E52 Z8 Discussion
    Hi all. My M5 has recently developed a very rough idle only when the engine is cold and not fully warm. Initially when it began happening I found that the 2 breather hoses in front of engine bay were completely deteriorated with holes and tears in them (which is common) so I replaced them...
  5. MAFs Appear Shot: Next Steps

    E39 M5 and E52 Z8 Discussion
    I have been trouble shooting rough idle / B2 B3 AE AF / touchy throttle problems since I bought my car. After a VANOS O-ring refresh, valve cover gaskets (redid the job and they now appear perfectly seated), I still had touchy throttle and B2, B3 codes. I figured the B2, B3 could be lingering...
  6. bad MAF, replacement help

    E34 M5 Discussion
    HI all, after my car was acting up.....stuttering about...I took it in to my INDY, he found MAF CODE as the issue. Is there a modern replacement for my '91's maf? is new one cost stupidly high? buy used? if so, ideas? thanks so much 91 usa m5 160k
  7. E39 (96-03) For Sale OE BMW Bosch MAFs (pair) $100 shipped!

    Parts / Other For Sale or Wanted
    Replaced my MAFs as part of the 100K maintenance, but these still operated fine when I took them out. They might have been replaced before now, because these certainly don't look like they've accrued 100K miles. They look nice and clean. See for yourself, I can post a high res pic if you'd...
  8. Need help diagnosing this puzzle...

    E39 M5 and E52 Z8 Discussion
    Two months ago my E39 M5 with 195K miles broke down on the highway. It went into limp mode several times in the prior days, but I was always able to recover by pulling over and shutting the engine off for a few minutes. This has happened a few times since 150K miles, but always started right...
  9. MAF Test < 90

    E39 M5 and E52 Z8 Discussion
    2000 M5 @ 35,000 miles MAF test via GT1 @ Idle passed MAF test via Cluster Screen L/HR never got to 90 Last MAF test via cluster (I ran 3 times 2nd and 3rd WOT) never got to redline. . .Car went into limp and threw a SES - code was misfire cyl.1 @ 6350rpm. That was the ONLY code. Vanos...
  10. Newbie with Questions

    E60 M5 and E61 M5 Touring Discussion
    Hi All, I've been on this forum since last October when I purchased my '08 M5. The content is great, and I really appreciate all the help. I'm having a blast with this car, after coming out of a 550i. However.. I have a few small issues that 2 dealerships can't seem to resolve. Wondering...
  11. MAF cables ?

    E39 M5 and E52 Z8 Discussion
    Hi, I did the MAFs testing this morning and the peak was at 55-65 Liters/h, I found it weird since the MAFs were changed before I buy my car. So I opened the hood to see this (click for larger view) : Driver side MAF: Passenger side MAF : There is no rubber around the connectors (not...
  12. MAF or Not....?

    E34 M5 Discussion
    Hey,. I bought my first M5 about 2 week ago, a 1992 model with 193000km on the clock. Got a question. The airflow meter on the car gave in so the guy I bought it from fitted an stand alone management system because it costs less than half the price BMW ask for n new AFM, witch has to be...
  13. Smog/Recall Problem: Peak Code: P0171 / P0174 -- MAF's/Dinan Software or Emissions Recall?

    E39 M5 and E52 Z8 Discussion
    I just bought a 02 BMW M5. I bought it through a dealer that I know well, the car was repoed previously but I got a good price. He told me to take it to smog myself. It has the Dinan badge on the back. I called the shop that installed all the Dinan and they said the car had the Cold Air...
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