Recent content by alexwagner

UPDATE: My car is now cured (I've done 500 miles with no symptoms). :-) To cure the car, BMW changed the low pressure immersed fuel pump and the fuel filter.

The problem is: - the fault codes indicate lean mixture on all 6 cyls (though not necessarily all 6 at once), which rules out a lambda probe - just because it is running on 3 doesn't mean it is a bank of 3... it might be a mix - also, everyone here is adament that lambda probes cause no...

The ticking sound is the engine ; the camera is in my hand, so no ticking sound from it. Sounds like 3 cyls to me too. No hissing noise, no.

I'm actually in France, so my supplier is a French one. But I think you just need to look on the Gruppe M website, or email them for the UK distributor, or at worst order from them in Japan (that's what I did 5 yrs ago when I got one for my Alpina B8 4.6).

The Gruppe-M is an easy bolt-on job. I didn't declare to insurance, as it doesn't change the performance.

I've sent the link to the dealer. I'll let you know what he thinks... The engine's not going to expire ; it just sounds like it isn't getting any fuel. And this episode only lasted 2 minutes, in 10 hours of driving last weekend. Rest of the time, the engine is fabulous.

I only let it run like that for 2 minutes, for the video. It was vibrating, but won't have done any harm.

I have just posted a video of friday ; the motorway incident where it was suddenly very very rough indeed until I pulled over and started the engine again: http://www.youtube.com/watch?v=22u4HU53z6c (comments are in French, my other language)

Interesting. Sounds like my symptoms, but here's the thing: The fault code readouts show lean mixture and misfiring on all 6 of the cylinders. To BMW & I, this rules out lambda probes, because I would have to have 2 faultly lambda probes. Too unlikely. BMW has checked for air leaks in the...

Well, I'm back from 500 miles over the weekend, with a new air flow meter : no change. Car was great all the time except: - after one hour on the motorway, it suddenly did the major coughing and spluttering, unable to maintain 70mph, very very rough, like it was running on only 2 cyls. At the...

Do you have a video clip for us to hear? If not, can you please describe the sound, compared to having just the Gruppe M airbox (which I have).

I have the Gruppe M. Sounds FABULOUS! Type "gruppe m porn" in you tube to hear it... (no power gains, which is fine by me)

I have the Gruppe M carbon airbox on my Z4M. Holly s**t, it has transformed the car with its fantastic sound. Sounds like the 1/2 McLaren F1 engine that it is! :-)))

I picked up the diag fault list today: - Engine misfires on all 6 cylinders (not necessarily all at once, but all 6 were concerned at some time) - Mixture too lean BMW has ordered a new fuel pump and will fit it next week, with a new fuel filter. In the meantime, they've fitted a new AFM (air...

Both... when near my home I often fill at same place, but I do move around a bit...