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Old 05-21-2009, 05:36 PM   #1
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exhaust humm

I have an 82 GT, 302 (slight cam) headers, off road pipes, and Flowmaster 40 mufflars. I have a horrible hum at idle and between 1800- 2100 rpm.

Is there anything I can do to get rid of it?

I was told I might need more back pressure.
The car has all emission equipment removed.

Please help, I hate driving it because of the noise.

Thanks,
MIke
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Old 07-10-2009, 04:18 PM   #2
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Re: exhaust humm

Thats sounds like the Flowmaster "drone" to me.
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Old 07-12-2009, 05:22 PM   #3
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Re: exhaust humm

thats def drone. get new mufflers. flowmaster are famous for that. i had super 40's and i ripped them out and i got SLP LM I's and solved that problem
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Old 07-13-2009, 08:35 AM   #4
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Re: exhaust humm

what gears, it gets worse with gears as you are higher in the rpms driving around and such
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Old 07-15-2009, 02:40 PM   #5
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Re: exhaust humm

Enjoy it.
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