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blackbox · 09-16-2009, 04:14 PM

I found out thru internet searching that Ford Mustangs encounter the exact same problems when using particular Magnaflow and Flowmaster cat-back systems. They also get resonance around 2krpm.

One mustang board member( http://forums.corral.net/forums/showthread.php?t=496793) solved his drone problem by adding a 1/4 wave closed-end resonator tube before his muffler. The closed end tube is reflecting the the sound wave back into the exhaust path out of phase, thus cancelling the resonance. Sounds simple enough, but I'm not sure I could apply it to my setup.

One of the board members also posted a link to an aftermarket BMW exhaust that incorporated the same style of resonator tube. Check out the link above. It was a pretty interesting read.

I've heard the Fabspeed and Maxspeed exhaust. They sound good, but not my taste. I like a less baffled sound.

09-16-2009, 04:14 PM	#20
blackbox Registered User Join Date: Apr 2007 Location: Marshall, TX Posts: 62	custom exhaust resonator I found out thru internet searching that Ford Mustangs encounter the exact same problems when using particular Magnaflow and Flowmaster cat-back systems. They also get resonance around 2krpm. One mustang board member( http://forums.corral.net/forums/showthread.php?t=496793) solved his drone problem by adding a 1/4 wave closed-end resonator tube before his muffler. The closed end tube is reflecting the the sound wave back into the exhaust path out of phase, thus cancelling the resonance. Sounds simple enough, but I'm not sure I could apply it to my setup. One of the board members also posted a link to an aftermarket BMW exhaust that incorporated the same style of resonator tube. Check out the link above. It was a pretty interesting read. I've heard the Fabspeed and Maxspeed exhaust. They sound good, but not my taste. I like a less baffled sound.