Muffler condensate

Asked by Mar 11, 2016 at 12:22 PM about the 2006 Pontiac Grand Prix GT

Question type: Maintenance & Repair

Is it wise to drill a 1/8" hole in each muffler in my 2006
grandprix gt to allow water ans moisture to drain

2 Answers


Not wise at all. you don't want any holes in the muffler, you won't pass inspection with one. Drive for at least 10-15mins at a time, short trips kill exhaust systems.


Longer drives will warm up the exhaust system to the point where the condensation will evaporate on its own.

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