Exhaust too loud - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BRZ616 · 04-02-2018, 09:08 PM

Hi just installed the agency power catless header mid pipe and catback system. sounds like race car very loud inside any sugestions to get rid of the loud vibrations inside of the car? new axel back with larger mufflers? fun for 5-10 miles definetly not good for longer trips.

thecarfilmer · 04-03-2018, 12:00 AM

Put stock front pipe back on

humfrz · 04-03-2018, 12:50 AM

Put the stock muffler back on for trips .....

humfrz

dutchman1 · 04-03-2018, 01:05 AM

If you don't want a loud exhaust why'd you buy an aftermarket exhaust? Nothing wrong with the stock one.

Also if the back seat isn't up, put it up. When the seat is down the trunk has a bit of an echo effect on exhaust noise.

PuslarBrrrz · 04-03-2018, 02:08 AM

Reinstall the oem catback.

Timmy_Jones · 04-03-2018, 09:14 AM

I was surprised how much louder a catted front pipe (aftermarket 2.5") made my whole exhaust setup...that restrictive cat/resonator makes a huge difference. With your setup, I would look at the muffler to help reduce noise/drone. Stock catback may not be a bad idea.

tyler_win_photo · 04-03-2018, 12:34 PM

Quote:

Originally Posted by BRZ616

Hi just installed the agency power catless header mid pipe and catback system. sounds like race car very loud inside any sugestions to get rid of the loud vibrations inside of the car? new axel back with larger mufflers? fun for 5-10 miles definetly not good for longer trips.

To reduce some loud vibrations in the car you can try insulating your car with dynamat or something similar. People have had varying success with this. Some people report it works well, others not so much.

The midpipe is part of the catback. I'm guessing you meant you changed the front pipe?

8RZ · 04-03-2018, 12:44 PM

Get ear plugs.

04-02-2018, 09:08 PM	#1
BRZ616 Member Join Date: Dec 2017 Drives: 15 BRZ Dark Grey Metallic Location: Grand Rapids Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Exhaust too loud Hi just installed the agency power catless header mid pipe and catback system. sounds like race car very loud inside any sugestions to get rid of the loud vibrations inside of the car? new axel back with larger mufflers? fun for 5-10 miles definetly not good for longer trips.

04-03-2018, 01:05 AM	#4
dutchman1 Senior Member Join Date: Nov 2016 Drives: 2017 86 6-Speed Location: Seattle Posts: 138 Thanks: 35 Thanked 74 Times in 36 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	If you don't want a loud exhaust why'd you buy an aftermarket exhaust? Nothing wrong with the stock one. Also if the back seat isn't up, put it up. When the seat is down the trunk has a bit of an echo effect on exhaust noise. __________________ 2017 86 set up for CS STX autocross

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04-03-2018, 12:50 AM	#3
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,868 Thanks: 28,790 Thanked 31,816 Times in 16,425 Posts Mentioned: 708 Post(s) Tagged: 2 Thread(s)	Put the stock muffler back on for trips ..... humfrz

04-03-2018, 02:08 AM	#5
PuslarBrrrz Senior Member Join Date: Jun 2017 Drives: 2013 BRZ Location: Dayton, OH Posts: 103 Thanks: 37 Thanked 61 Times in 33 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Reinstall the oem catback.

04-03-2018, 09:14 AM	#6
Timmy_Jones Spun Join Date: Mar 2013 Drives: 17' Focus RS Location: New England Posts: 1,179 Thanks: 396 Thanked 400 Times in 273 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I was surprised how much louder a catted front pipe (aftermarket 2.5") made my whole exhaust setup...that restrictive cat/resonator makes a huge difference. With your setup, I would look at the muffler to help reduce noise/drone. Stock catback may not be a bad idea.

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