Swapmeet Mufflers
Here is what the Accurate mufflers look like inside:
The 2 1/4" inlet pipe necks down to 2" inside the muffler body. The gasses have six (6) 1/2" holes to pass thru to get from chamber to chamber before they can exit thru the outlet pipe which is still 2" but necks up to 2 1/4" outside the muffler body.
It reminds me of Corvette side pipes which were supposedly a 2 1/2" tube but turns out the chambered design necked the pipe down to 1 7/8" internally. Too much restriction.
The Accurate mufflers looked good, and sounded good without that Flowmaster-type drone at cruise speed. But I didn't realize they were this restrictive until I swapped them out and cut open one to look inside.
Here is what the Accurate mufflers look like inside:
The 2 1/4" inlet pipe necks down to 2" inside the muffler body. The gasses have six (6) 1/2" holes to pass thru to get from chamber to chamber before they can exit thru the outlet pipe which is still 2" but necks up to 2 1/4" outside the muffler body.
It reminds me of Corvette side pipes which were supposedly a 2 1/2" tube but turns out the chambered design necked the pipe down to 1 7/8" internally. Too much restriction.
The Accurate mufflers looked good, and sounded good without that Flowmaster-type drone at cruise speed. But I didn't realize they were this restrictive until I swapped them out and cut open one to look inside.