2G Exhaust tone/volume

[Bedicine]

Hello

Looking for some insight on ways to help quiet down my exhaust. Car has a lot of drone when cruising between 2-3,000 rpm. Makes it very attractive to police in the area and not enjoyable when I want to put the family in the vehicle. The tone is very deep which is nice but just extremely loud, so much that I have to roll the car into my garage at night just to not wake up our baby who’s room is at the opposite end of the house.

Current setup is
- 3” RTM cat back (has 2 resonators built into it)
- hi Flo cat converter at downpipe before midpipe
- 38mm tial EWG with recirculated 02 housing
- STM downpipe
- FP manifold

I have a vibrant stealth muffler on my shelf I could get put in but not sure if this is going to make a drastic difference. Not sure if another resonator will get me where I need to be or would the stealth muffler solve all the issues?

Thank you, photos attached of current setup

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[DSMPT]

Did you check the ECV (Exhaust control valve)? Many place in Japan, each houses are really close and neighbors are usually very sensitive with exhaust sound, so people who don't want to bother neighbors used to use the ECV, maybe some people still use. It doesn't drastically turn down the exhaust sound in total, but it would cut the low-pitched/deep tone a lot.

 

[Bedicine]

Like an electronic cutout?

 

[spyderdrifter]

Do you have a silencer in your muffler?

 

[DSMPT]

Like an electronic cutout?

Like this.

APEXi - ECV Exhaust Control Valve - Flange Type (Manual)

The ECV was created as an alternative to the standard silencer typically fitted in the tip of performance exhaust systems to lower the sound decibel output. The ECV (Exhaust Control Valve) is a spring loaded butterfly valve that can be installed to the main piping of an existing exhaust system...

www.apexi-usa.com

A'PEXi - Active ECV Exhaust Control Valve

APEXi Active ECV Exhaust Control Valve (Valve Only)* Must need Active ECV Exhaust Control Valve Remote for them to work properly Please select the valve for your exhaust system Volume control with remote control (wired) Achieves automatic ON / OFF at any vehicle speed or rotation speed * Fully...

www.apexi-usa.com

 

[Bedicine]

Do you have a silencer in your muffler?

I have. Car ran terribly and one time it actually popped out . Also not a fan of how it looks with the car.

Another issue is the smell even with the small hi flow converter. Wondering if another hi flow and the vibrant muffler would fix all the issues or is it better to go with another resonator and the vibrant muffler

 

[chrisman287]

You really need a much larger resonator for the drone and the stealth muffler might quiet the tone down a bit.

 

[CrackedDSM]

You really need a much larger resonator for the drone and the stealth muffler might quiet the tone down a bit.

This. This is the fix. I will say, a proper muffler makes all the difference. I have a thermal R&D 3" turbo-back with no cat or resonators, and I don't wake my kid up who's window is right next to the Talon. As long as I don't rev it high or punch it, there's no issue. The difference is I don't have a "bullet" muffler, I have the thermal muffler which is just a rebadged Magnaflow 3" in/out muffler. Change nothing about the exhaust except the muffler to the Magnaflow one, and I'd honestly bet money that would help a ton. No drone at 3000-3500RPMs on the highway with the windows down either. With windows up conversations are easy.


Bigger/stronger muffler is my vote.

 

[curt-s]

I have somewhere between a 12-18" long 3 inch resonator (never measured). It's still damn loud and drones, I couldn't imagine how bad it would be without. A properly chambered muffler has got to be the answer, though I'd know nothing about that

 

[CrackedDSM]

Couple clips for you guys. These cars both don't have any resonators and they both have the same muffler. The 2G had a 3" high flow cat, but that's it.

Current 1G

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Outside perspective/sound video of exhaust as I pull away. Again, for reference as to how low the exhaust is you can hear the engine itself over the actual exhaust.

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Old 2G Talon( never should've sold it )

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2G in-car exhaust sound. This is with the windows fully down too.

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Better in-car idle video, same 2G. It's so quiet that the EXTREMELY F*CKING ANNOYING BEEPING completely drowns it out. Lol.

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But yeah, keep in mind both of these exhausts legitimately only have a 3" in/out Magnaflow chambered muffler, and otherwise are a 3" straight piece of pipe from the turbo back. Mandrel bent of course. Imagine how much quieter both would be with a couple extra resonators.

 

[DSMPT]

Passenger's side exit but it has a Vibrant 3" race muffler and a Vibrant resonator. I don't know how loud is yours but this is not so loud even side exit (In the video, it was around 1300rpm). I have one shorter driver's side exit with only a Vibrant 4" race muffler (without a resonator). That's much much louder.

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[CrackedDSM]

It occurs to me now, I wish we had decibel meters. Would probably help these videos a little more, because "loud" is subjective AF.


That sounds great though, Hiroshi.

 

[curt-s]

Couple clips for you guys. These cars both don't have any resonators and they both have the same muffler. The 2G had a 3" high flow cat, but that's it.

Current 1G

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Outside perspective/sound video of exhaust as I pull away. Again, for reference as to how low the exhaust is you can hear the engine itself over the actual exhaust.

You must be logged in to view this image or video.

Old 2G Talon( never should've sold it )

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2G in-car exhaust sound. This is with the windows fully down too.

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Better in-car idle video, same 2G. It's so quiet that the EXTREMELY F*CKING ANNOYING BEEPING completely drowns it out. Lol.

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But yeah, keep in mind both of these exhausts legitimately only have a 3" in/out Magnaflow chambered muffler, and otherwise are a 3" straight piece of pipe from the turbo back. Mandrel bent of course. Imagine how much quieter both would be with a couple extra resonators.

Good god, my 272s don't sound like that. Your lope definitely sounds a lot more pronounced.

Also, I think I hear that burble (best way to explain it) I was talking about in that other thread during your low rpm acceleration in the second video.. I think.

 

[CrackedDSM]

Good god, my 272s don't sound like that. Your lope definitely sounds a lot more pronounced.

Also, I think I hear that burble (best way to explain it) I was talking about in that other thread during your low rpm acceleration in the second video.. I think.

Yeah that second video/maiden voyage was uh...we'll just say barely controlled chaos. To say it was "untuned" would be putting it extremely gently and mildly. Also, keep in mind this is idling at like 1050. Lol. Trying to idle at 750-850 is a hilarious experiment in how to lope yourself into a stall.


But yeah. Honestly the more time goes on, the more I think these are 280s. I'm about ten seconds away from pulling the VC and pulling the cam cap closest to the cams and getting the numbers there.

 

[Imback]

If you truly want to quiet the car down for cruising in town in a hot spot with cops or when your getting home. A varex muffler is your only choice. A resonator helps while cruising but idle is the same. I installed one in my friends car and the video does not even do it justice. He pulled up to my house for the first time and i didn't know he here.

 

[curt-s]

Just do research and ask around reputable shops before you go and order a Varex or other actuated muffler options, specifically about longevity.

 

[Bedicine]

Appreciate everyone’s input and the videos, big help. Going to start with vibrant muffler and see how it goes and from there I can go change the resonator. Will post some clips up once I get it done

 

[TuskeeTuner]

A cammed DSM with a 268 or larger exhaust cam will have a good idle chop if it's properly fueled, timed, and up to temperature. It won't really be "quiet."

Yeah that second video/maiden voyage was uh...we'll just say barely controlled chaos. To say it was "untuned" would be putting it extremely gently and mildly. Also, keep in mind this is idling at like 1050. Lol. Trying to idle at 750-850 is a hilarious experiment in how to lope yourself into a stall.


But yeah. Honestly the more time goes on, the more I think these are 280s. I'm about ten seconds away from pulling the VC and pulling the cam cap closest to the cams and getting the numbers there.

I'm an old man and want to have a rowdy exhaust. Going with a 3" Flowmaster Outlaw, Vibrant resonator (havent decided on 12" or 18" versions yet), and a Stainless Works high flow cat.
Recommend a resonator of some sort...even a short one.

Last car that I wrecked had an Edelbrock 5525 3", a Summit Racing louvered core resonator 3", and a Catco 3" cat - that car was pretty quiet. Only a deep muffled tone with no popping or afterfire. The only thing amazing about it was how quiet it was.

Yeah that second video/maiden voyage was uh...we'll just say barely controlled chaos. To say it was "untuned" would be putting it extremely gently and mildly. Also, keep in mind this is idling at like 1050. Lol. Trying to idle at 750-850 is a hilarious experiment in how to lope yourself into a stall.


But yeah. Honestly the more time goes on, the more I think these are 280s. I'm about ten seconds away from pulling the VC and pulling the cam cap closest to the cams and getting the numbers there.

You can idle under 900 with 264/272s. Just make sure you have enough fuel and advance the timing...

 

[CrackedDSM]

You can idle under 900 with 264/272s. Just make sure you have enough fuel and advance the timing...

Not sure why you quoted me here as I don't have 264s, or a 264/272 combo. Both of those things are smaller duration than my cams.