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Old 10-19-2017, 05:42 AM   #18
Join Date: Dec 2006
Location: Benson Arizona
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Default Re: Removing Espar D4 for maintenance

After removing the muffler I could hear little or no difference from inside the van. Outside it's a bit louder - more so when the heater is running at high heat output. It's difficult to quantify without decibel readings - but i'd guess 20 to 40 percent louder depending on what heat output level it's running at...
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Robert Foster (10-29-2017)