[Covetingjarl]

Hello All,

I was wondering if anyone that has an aftermarket exhaust happens to know the decibel levels of their exhaust system. I live in Ohio, and I know some people who have gotten tickets for their exhaust system being over the decibel threshold. Ohio's law states: (1) For passenger cars:

(a) When operated at a speed of thirty-five miles per hour or less, a maximum noise limit of seventy decibels;

(b) When operated at a speed of more than thirty-five miles per hour, a maximum noise limit of seventy-nine decibels.

So far the only exhaust system I saw with a posted Db level was Ark DT-S which stated 80 Db @ 3000 rpm. They did not state what gear/ MPH that the Db level was recorded. I have not found information on any other exhaust systems on the market for the VT. I am not looking for "fart cans" or anything extremely loud, I just want something a little louder than stock to make it sound more sporty. The MBRP sounds really loud, and I heard the Magnaflows are more on the quiet end. I was looking into the borla S type, however from reading on the site it looks as if the borla touring is the same as the S-type but with a resonator.

I am looking for direct bolt ons and per Ohio's laws/ my county's emissions laws I need a cat converter and I need a muffler. I tend to drive more liberally, I just like the sound. I rarely WOT. I average 32-33 MPG for reference. So when I am in the city and there is a cop sitting at a speed trap I want to know if I drive liberally are after market exhausts naturally loud? is there a way to make it quitter? For example, drive in a higher than need gear? I am not sure how exhaust systems work for loudness but if it is like the air intake system, I can take off slower and just shift at lower rpms so the noise is not as excessive.

Any info or experiences would help, thanks!

 

[E9C900A]

Surely you jest.

 

[Bigbird]

I got friends in Ohio, they have a wide range of exhausts levels and none have had any issues. That would require an officer to carry a decible meter with them. We have that same laws here in MD and cops just use it as an excuse to pull someone over for further inspection. If a cop wants to pull you over for noise violation, he will and there's nothing you can do about it short of leaving it stock.

That said, if your running any kind of catback with the stock catalytic converter in place then you should be fine as long as your not drawing attention on purpose. The MBRP is likely the loudest catback you can get so if you avoid that one, you should be fine.

The only other option is to get a remote cutout or adjustable muffler so you can have noise when ya want it and silence when ya dont. It's working great for me.

Db is dependant on RPM and engine load. Exhaust under heavy load but low RPMs can still be loud. To be honest, with the stock cat in there and even with an MBRP catback, a short ram intake is almost as loud under load.

 

[ECVT16EDev]

When I installed the MagnaFlow, interior dB was @ 75 (2500+/-RPM) and flooring it and letn off throttle was 85-90dB. A custom J Pipe that was installed dropped the cruise and others down by 10dB.

Now I know you are looking at more external sound levels, but this is what I record last year when doing my exhaust and addressing the sound without adding more restrictions to it.

 

[Santiad]

Leave it stock man...

Sent from my SM-G900V using Tapatalk

 

[azycray]

here in Alabama i dont think there is any laws that have a decibel level , but i got a turbo muffler from magnaflow had i put in place of the stock muffler and i am sure it il less than 70 decibels and less than 200.00 including new tips but it sounds great and just loud enough so i can tell rpms when backing into my parking space. its up hill into parking lot and up hill into parking space so bing able to tell rpms without looking and i don't burn up the clutch

 

[mkxlova]

I got friends in Ohio, they have a wide range of exhausts levels and none have had any issues. That would require an officer to carry a decible meter with them. We have that same laws here in MD and cops just use it as an excuse to pull someone over for further inspection. If a cop wants to pull you over for noise violation, he will and there's nothing you can do about it short of leaving it stock.

That said, if your running any kind of catback with the stock catalytic converter in place then you should be fine as long as your not drawing attention on purpose. The MBRP is likely the loudest catback you can get so if you avoid that one, you should be fine.

The only other option is to get a remote cutout or adjustable muffler so you can have noise when ya want it and silence when ya dont. It's working great for me.

Db is dependant on RPM and engine load. Exhaust under heavy load but low RPMs can still be loud. To be honest, with the stock cat in there and even with an MBRP catback, a short ram intake is almost as loud under load.

im actually looking to buy a veloster turbo(20130 and was wondering wat options there are for the valved catbacks, i wanted the advantage of sound when i want it and silence when i dont. I too live in maryland.

 

[trdtoy]

QTP