Driving over puddles causes exhaust leak sound and sluggish performance

I have an 06 330i e390

Whenever driving over puddles, my car sounds like all of a sudden I have an exhaust leak when it in fact it's something electrical.
I'm unable to pull codes. Maybe it's because of the cheap scanner I'm using; Innova 3030 scanner.

Please know that if I avoid puddles long enough or just sitting idle in traffic, everything is back to normal; no more exhuast leak sound and no more sluggish performance.

Any ideas on what it could be?

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Driving over puddles causes exhaust leak sound and sluggish performance