Quote:
Originally Posted by MrBonus
I just put 830 miles on my car to and from a rally with SSIs and two-in-one-out M&K and at 5000 RPMs (which is 88 mph in 5th for me), I couldn't even hear my Bluetooth speaker in the passenger seat at full blast next to me.
Below 4500 RPMs, it's totally livable.
If I had two-in, two-out, I likely would have had hearing loss without ear plugs.
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The drone and dB level are not the fault of the 2 out design, they are the fault of the muffler design and construction
I've had 2 out for decades w/ multiple mufflers, the only 2 that didn't have drone and loudness issues were a B&B and a Fabspeed, and early Fabspeed didn't drone but it was loud.
SSI w/ 2x out just need the right muffler