Quote:
Originally Posted by iQuiet
Firstly..
When you put it in MDM. It'll only make burbles and pops once the car is warmed up..
So if you put it in MDM on the cold start, it'll take a couple minutes of driving for the ECU to to make these over runs and burbles because one of the preliminary requirements is that the engine is warm enough (hits a specific temp.)
All BMW are programmed to not burble over 5,000 RPM.
Secondly, if you run it in MDM. Your throttle response is actually equivalent to sport..
Its more responsive than comfort but less than sports +
Thirdly, the stock valve are pretty crap, all the exhaust sound the same pretty much.
However, on sports+ I believe that over a specific RPM (I think 3,500) it is louder than comfort. But all else remains the same except comfort doesn't allow for engine braking.
Hope this clears up your questions!
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Awesome, that definitely makes sense as this happens most often when the engine is colder. Great info all around, appreciate it!