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| jack_mccarthy |
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Hi, I have a EA falcon 3.9 with a 3inch cat back exhaust, high flow cat and extractors and it gets a bad exhaust drone is this fixable or just something I have to deal with, Any help will be appreciated
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| TROYMAN |
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it drones because the 3" is to big on a std car..
but you can fit a resinator at the rear to help with the drone, if it already has a resinator you can fit a quieter mufler, next option would be put a 2 1/2" exhaust on it with a rear resinator... |
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| evxr6 |
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Fit a turbo and it might quiet it down.
_________________ Current ride: MY03 Liberty RX Wagon |
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| jack_mccarthy |
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Hi, thanks for the help i will be doing some top end mods shortly so it might help a bit, but when I went to the exhaust shop they ordered a 3inch in my mistake so I got it for the price of the 2 1/2 so i couldn't' whinge
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| revcore |
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Does the drone dissapear once the car has warmed up or does it drone all the time?
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| jack_mccarthy |
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No, It stays when it warms up to it drones when on the highway a fair bit
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| naughtyfalcon |
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i put a 2.5 inch one muffler system on my ef, it droned like mad at 100kph, so i bought a complete rear tail pipe with resonator and it is a lot quieter, but still growls when taking off, and i think 3" on a standard motor is over kill, 2.5 would be maximum.
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| Six |
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Best bet would be to sell the 3' and buy a 2.5'...
_________________ MGW Short Throw Shifter, CVE Cam, CVE Head, SS Big Mouth Air Intake, Pacemaker Headers, 3" Exhaust, 3" Varex, 3" Cat, 19" Silver Agents, EMS Stinger 4424, 42lb Injectors and Walbro 255lb Fuel Pump |
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| naughtyfalcon |
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but you have to have at least two mufflers on a 2.5 inch system
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| low_ryda |
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I've got a single muffler system that doesn't drone.It's loud and sometimes annoying but isn't droney. Though it does run an extra hot dog soon after cat and a res at the rear though. 2.5inch constant diameter but not 3. It's flanged with a dump at the diff before the extra res so I can remember how annoying it is every now and then.
In my experience I find the hot dog up front slows the gases down, the muffler quietens them up then the res takes out the drone.
_________________ Not to get technical, but according to chemistry alcohol is a solution. |
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| TROYMAN |
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a hot dog is a resinator..
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| low_ryda |
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in my system, they are different types, hence the different names, though they are the same thing essentially. the front one has more intruding internal perforations. The rear res is more a straight through res.
_________________ Not to get technical, but according to chemistry alcohol is a solution. |
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