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      08-28-2012, 11:10 PM   #18
malter2.0
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Quote:
Originally Posted by mapezzul View Post
In both situations it was high altitude and high heat. Did anyone ever read the codes to see what was the trigger? No, so for all we know in these two isolated instances the limp mode may have been a function of emissions, fuel starvation or the turbos boost pressure going too a level deemed to high which was done to compensate for the the thinner hot air.

My guess would be the latter as in one of those tests an AMG had the same issue. From my experience the E60 M5 had issues on heat baked tracks with short straights and that was an NA engine.

Outside these two situations (one also reportedly had been low on oil IIRC) there have been no noted issues and honestly in Spain it was blistering hot and the cars would have had issues if heat was the lone inducer of the "limp mode"

Two cars in probably 2,000 track occurrences for the new M5 is nothing. Doing 25 laps at full tilt on the 'Ring with no issues is what its about and these are street cars, not full on race cars- they never were.
Doesn't matter whether it was high altitude and high heat. Should people in Denver now not buy this car because it is not rated for that altitude? You are speculating on reasons. Actually, it doesn't really matter what the reason was. Car should not go to limp mode. Not sure how your experience with naturally aspirated V10 is really relevant here. It is FI vs N/A and different cars all together. You will always find cars that don't have any problems, just like there are plenty of N54 engines that don't have any HPFP issues at all or early S54s with no rod bearing issues.

The reason why you are not seeing any issues yet is because this car is barely out. Only a handful of people received the car in US and Europe. It is just now hitting the dealership.

I sincerely hope it will not be another N54-deja-vu issue.
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