This is great guys,keep it up,finding it very interesting.
I knew something was up with these air-boxes when i first bought my car,i asked the service guy where the air filters were as i like to change them often myself,when he showed me where they were,i thought i might give it a miss and he thought the same.BMW do seem to have gone to a lot of trouble with this.
Here in oz there is a $30000.00 retail price gap between the 50 and the M,so you cannot blame us for getting the 50 and doing mods to bring it close to the M
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It will be great to see what you guys find out,its a shame the tuning companies cannot shed more light on this too.
TahoeM3-what was the reason behind selling the M and buying the 50 and how do you compare them?,not that i dont like my 50,just curious