280AZ Posted October 29, 2017 Share Posted October 29, 2017 Hey guys i flubbed up and bought a 3.5" muffler off of ebay rather than the 3" i intended to buy. Is there anyone that can tell me what kind of impact a larger muffler would have on my 3" exhaust? Quote Link to comment Share on other sites More sharing options...
Ereschkigal Posted October 30, 2017 Share Posted October 30, 2017 It will theoretically get louder. Quote Link to comment Share on other sites More sharing options...
Namor Posted October 30, 2017 Share Posted October 30, 2017 If it is a cheap brand, there may be no difference. Engine Masters on Motor Trend tested a bunch of mufflers and found that the cheap 3" mufflers were actually a 2.5" core with 3" inlets and outlets and the cheap 2.5" mufflers were still a 2.5" core. Quote Link to comment Share on other sites More sharing options...
LLave Posted October 30, 2017 Share Posted October 30, 2017 If the overall size still fits, I would get a 3.5 to 3 exhaust reducer, and move on. No biggie. Quote Link to comment Share on other sites More sharing options...
280AZ Posted October 31, 2017 Author Share Posted October 31, 2017 Thanks everyone it is borla so seems to be true 3.5" but i really like it so I'll try to get it to fit under the car lol. As long as I don't have any performance loss I'll try to make it work Quote Link to comment Share on other sites More sharing options...
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