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Old 10-22-2008
Tys 4x4 FTW's Avatar
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interesting sound coming from flowmaster 40

so i hadnt noticed it until recently when i was driving with the rear slider open.

when i really get on the gas, i hear an odd noise coming from the muffler.

it almost sounds like someone sucking fluid through a straw in an almost empty cup. you know, that noise that kids do when their cup of soda at a restaurant is almost empty.

any ideas?

bad muff? bad welds? idfk what the deal is. but its a bit annoying..
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Old 10-22-2008
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close the slider... lol.


My guess is possibly a leak in one of the welds in your system. Or could be condensation(water) being gurgled out. I've never had this issue you've got.

I've got the good old manual trans and the pop pop gurgle gurgle under deceleration in gear, but that's normal.

Last edited by Fx4wannabe01; 10-22-2008 at 05:22 AM.
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Old 10-22-2008
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im leaning towards a bad weld, but again, im not quite sure.

one of my buddys up here has a friend that does some welding, so ill be having a new exhaust setup pretty soon thatll surely get rid of that :)
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Old 10-22-2008
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My magnaflow does that when i stomp on it...my muffler and tip are under me though (single cab)...I wouldnt worry about, tell yourself its a super muffler
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Old 10-24-2008
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Ride in the back to get a better hear.

Rich
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Old 10-24-2008
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Yeah I don't have that either with mine.
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Old 10-24-2008
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is it right when you start the truck up after you have been driving a while?
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