Hi all, been wanting to ask this for awhile.

I notice sometime under moderate to heavy acceleration, I can smell this "bad egg" exhaust coming thru the front air vents. It last like 5-10 seconds. Is this normal for the CU2?
If it helps, my CU2 is still plagued with the engine pinging problem (which Honda Australia and dealer are not doing anything about it) and is not sure if they are related, i.e. the smell is a result of the pinging.
I am running RON98 and car is 9 mths old.

Interestingly, I used to own a civic Type R FN2 and it generates almost the same "bad egg" exhaust smell when it's revved hard.

Is that characteristic of the famed Honda VTEC engine?