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Old muffler to new muffler - almost identical in terms of sound, within a 2% difference. Overpipe downpipe, we'll be testing here shortly and have a good opportunity to test it on a stock vehicle as well to compare it directly to the 2.5" version we have been testing with. Give us a week or so and I'll have actual numbers. Sound wise, the larger overpipe downpipe makes a LOT more noise from what we can tell. A few more tests to go to validate all of this.
As for the flange...well....move along, nothing to see here.
Jason
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