Quote:
Originally Posted by Falafel Combo
Not simply a factor of time elapsing, but the theory was that the engine was behaving differently in an effort to control exhaust emissions and the resulting adjustment left the exhaust note muted again.
I'm probably explaining it all wrong, but something along these lines.
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No, I understand what your saying. But since the 50i doesn't have exhaust valves there is nothing for the computer to adjust.
Any computer based adaptations to fuel, spark, timing, etc. happen fairly quickly and are so small that long term exhaust sound changes should be non-existent.