thrush muffler and mpg question
#1
thrush muffler and mpg question
i was looking around and i noticed a lot of guys on youtube and on here have thrush welded mufflers. i like the sound of them, so i was wondering what kinda of mileage increase did you see when you put these on (right now i get about 18 city/highway and 21.5ish on all highway) and if there was any drone in the 1800-2500 rpm range.
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