Are the DCS6421 and EA7900 mufflers interchangeable? If a Dcs6421 can take a top end upgraid to 79 cc without a muffler mod just a slight re-tuneing, can the 7900 get a 6421s muffler put in it? I can't find any info other than part numbers on this so I figured one of y'all saw gurus would know.
Muffler swap?
- Thread starter BJD85
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