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Originally Posted by sanch8
Understand its not a magic wand but curious to know if users have noticed any improvement in the exhaust note or additional burbles after installing JB+ on the 330i?
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The exhaust note stayed the same. However, my burbles no longer sound like how they used to before I put on the JB+. I have a muffler delete, so my exhaust is definitely much more sensitive to the changes from the JB+. The duration of burbles is much shorter after JB+, typically the difference is most apparent with JB+ after downshifting from third into second gear at around 2.5k RPM. In higher ranges, the burbles are definitely a little more pronounced than before JB+, and it sounds a bit more aggressive. However, in terms of volume in general, they both sound just as loud, before and after JB+.