G37 Coupe

Resonator help

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Old Jan 24, 2019 | 12:22 PM
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Vin Drozdek's Avatar
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Resonator help

Or so i got myself a Megan racing exhaust from the block to the back except the mid pipe which they do not have for the coupe. So im still running the stock Midpipe. Now im getting quite a bit of drone between that 1 and 2k rpm range. I will be getting a custom midpipe made to even out the piping diameter but not sure what resonators i should get welded in to reduce that drone. Any ideas?
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Old Jan 24, 2019 | 12:28 PM
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Search the Tech/Intake & Exhaust forum as well as this forum. There's a lot of experience posted regarding resonators.
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Old Jan 24, 2019 | 01:48 PM
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Vibrant 1790
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Old Jan 24, 2019 | 05:03 PM
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Vibrant 1790 (x2). They are 12” x 2.25”. Should help drastically with excessive drone unless you have test pipes installed before the y-pipe.
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Old Jan 24, 2019 | 10:38 PM
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I do have resonated test pipes lol
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Old Jan 24, 2019 | 11:21 PM
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Originally Posted by Vin Drozdek
I do have resonated test pipes lol
is the Megan Racing exhaust 3” diameter all the way through? What is the inside diameter of your RTP?

As you already know, best to match inside diameter as much as possible to help reduce drone.

Vibrant 1790 is 2.25”
Vibrant 1792 is 2.5”
Vibrant 1794 is 3.0”

Woukd love to know how Vibrant resonators welder to a custom mid pipe would sound thru Megan Racing mufflers.
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Old Jan 25, 2019 | 11:25 AM
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Originally Posted by Vin Drozdek
I do have resonated test pipes lol
Those are also before your pipe diameter change occurs....
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Old Jan 25, 2019 | 07:37 PM
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Will be getting this custom done next week, will record some before and after clips.
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