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Old 01-31-2019, 03:02 PM   #1
davisharr
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Quiet Catback to pair with Catless Downpipe

Hey guys,

Was wondering if anyone has any recommendations for a catback that is decently quiet. Car currently has a CTS Catless downpipe, and a stock exhaust with suitcase muffler delete. I love the sound but have recently moved to a big city and live in a dense apartment building residential area and it's just too loud, I love my loud cars personally but it's a daily and I don't want to make my neighbours who don't love loud cars go through listening to me pull out of the neighbourhood at 7am every day. I have no problems with drone or anything right now, just wana be a good neighbour and help give local car enthusiasts a better reputation.

I have done some searching on forums and elsewhere and most recommend a cat in downpipe for a quieter setup, but as I already have the catless and there are no emissions checks in my area I would like to keep it as is, and pair with a quiet ish catback if possible. I have considered just putting the rear suitcase muffler back on the stock exhaust, however I don't have the part anymore and purchasing a new OEM catback in my area costs almost as much as an aftermarket system anyway.

I know catbacks on these cars are worth little to no HP gain, but I have plans to go K04 one day so the extra flow would gain me a little bit i'm sure.

If anyone has any experience with getting a good, and not too loud sound out of a catless downpipe I would love to hear your recommendations! Bonus points if you have video or sound clips I can listen too! Thanks for help in advanced, and here are two videos of the current sound for those interested!

Thanks in advanced!

https://www.youtube.com/watch?v=IxOQ4FnqkJI

https://www.youtube.com/watch?v=tVjP8IcZUVk
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Old 01-31-2019, 03:18 PM   #2
riceburner
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go with a milltek with resonator and muffler. it's amazing how quiet yet great sounding their stuff is
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Old 01-31-2019, 03:22 PM   #3
jay745
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eurojet is also a great option that isn't very loud.
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Old 01-31-2019, 04:21 PM   #4
Tony48
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On the flip side, you'll want to stay away from catbacks with a single muffler in the mid-pipe like the Borla and Magnaflow. The most tame catbacks will be those with a resonator in the mid-pipe and a single or pair of mufflers at the axleback portion.
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Old 02-17-2019, 05:05 PM   #5
walmartlegend
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Using CTS Catback with the resonator quiet for regular driving decent sound when getting on it not ricey at all
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Old 02-17-2019, 08:53 PM   #6
cons
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Stock RSQ3 catback has a good quite sound and excellent performance. i have tried different types of custom catbacks: with or without resonators and with/without helmgoltz resonators. But the best quality of sound and performance I got when installed one from RSQ3. It has exhaust valve and can be very quite with close exhaust valve and can be a little bit louder than stock and more aggressive.

For example my sound on 3" downpipe and stock catback:



and 3" downpipe with RSQ3 catback (close exhaust valve):



And overlay:



RSQ3 catback has peaks on 50 and 100Hz, but other sound range from 125Hz to 16kHz a quiter than stock.
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Last edited by cons; 02-18-2019 at 01:49 AM.
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Old 02-20-2019, 04:42 PM   #7
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SPM street exhaust is pretty quite, thats what i have i love it.
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Old 02-22-2019, 11:16 AM   #8
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Running the DFG Tuning MK6 catback right now on a car here and sound is perfect IMO. Nice sound while cruising and opens up when on the throttle. Hand made in the US with solid warranty
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Old 02-22-2019, 02:49 PM   #9
ce4
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Just put a Beluga CBE on mine with stock downpipe. Sound is only a bit (a very tiny bit) louder than stock cbe, except when wot. would imagine it would be just a touch louder with catless dp. Good price on em too from ebay, direct from beluga.
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