How to get rid of the rasp in my exhaust sound? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DrewIsAmus · 02-04-2014, 07:48 PM

So, my exhaust consists of Borla UEL header, Perrin over pipe, Tomei titanium front pipe and Perrin 3" resonated cat back. Yes, it's loud and yes, it smells because I have no cats, but I'm ok with that. What I'm not liking too much is that when I really get on the throttle it gets pretty raspy outside of the car. The in cabin sound is nice and mean but I want to get rid of the raspyness outside.
I was thinking a high flow cat front pipe or the HKS dual resonated front pipe.
Suggestions? Experiences?

Here's my video.

[ame="http://www.youtube.com/watch?v=VTwVFqmuFPc"]2013 Subaru BRZ modified exhaust - YouTube[/ame]

jamesm · 02-04-2014, 08:21 PM

turbo.

swift996 · 02-04-2014, 08:24 PM

It seems like the only way to get rid of the rasp is to add an additional cat or a resonator. I have a catted header and had to swap a non-catted front pipe to a resonated front pipe to get rid of the rasp.

DrewIsAmus · 02-04-2014, 09:52 PM

Quote:

Originally Posted by jamesm

turbo.

Saving up for the Jackson Racing supercharger kit!

Quote:

Originally Posted by swift996

It seems like the only way to get rid of the rasp is to add an additional cat or a resonator. I have a catted header and had to swap a non-catted front pipe to a resonated front pipe to get rid of the rasp.

Thanks! I figured as much. Guess I'll be getting the HKS resonated front pipe.

jamesm · 02-04-2014, 09:54 PM

Quote:

Originally Posted by DrewIsAmus

Saving up for the Jackson Racing supercharger kit!

Thanks! I figured as much. Guess I'll be getting the HKS resonated front pipe.

Yeah that won't help with the rasp. Go turbo. You won't regret it. I've seen plenty of folks get buyers remorse and switch later. Just my .02, but I'm biased

.

FR-S Matt · 02-04-2014, 10:53 PM

You need a cat, turbo, or another resonator.

shellslinger · 02-04-2014, 11:31 PM

Woah you sure you dont have a Honda? lol jk.

But like everyone is saying you need another resonated pipe or go turbo

DrewIsAmus · 02-05-2014, 12:00 AM

Yep, I'll be getting the HKS front resonated pipe.

6speed_Sam · 02-05-2014, 12:41 AM

I had the rasp come from my catless front pipe once I installed the header. I wrapped my over pipe once and front pipe twice. It got rid of my noise.

02-04-2014, 07:48 PM	#1
DrewIsAmus Member Join Date: Dec 2013 Drives: Dark Grey Metallic 2013 Subaru BRZ Location: Mont Belvieu, TX Posts: 86 Thanks: 29 Thanked 18 Times in 14 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	How to get rid of the rasp in my exhaust sound? So, my exhaust consists of Borla UEL header, Perrin over pipe, Tomei titanium front pipe and Perrin 3" resonated cat back. Yes, it's loud and yes, it smells because I have no cats, but I'm ok with that. What I'm not liking too much is that when I really get on the throttle it gets pretty raspy outside of the car. The in cabin sound is nice and mean but I want to get rid of the raspyness outside. I was thinking a high flow cat front pipe or the HKS dual resonated front pipe. Suggestions? Experiences? Here's my video. [ame="http://www.youtube.com/watch?v=VTwVFqmuFPc"]2013 Subaru BRZ modified exhaust - YouTube[/ame] __________________ My Build Thread

02-04-2014, 08:24 PM	#3
swift996 Senior Member Join Date: Nov 2011 Drives: Subaru BRZ Limited 6MT Location: Winston-Salem, NC Posts: 2,432 Thanks: 712 Thanked 955 Times in 545 Posts Mentioned: 47 Post(s) Tagged: 0 Thread(s)	It seems like the only way to get rid of the rasp is to add an additional cat or a resonator. I have a catted header and had to swap a non-catted front pipe to a resonated front pipe to get rid of the rasp. __________________ Innovate Supercharged Black Limited BRZ 6-Speed MT(Build Thread) 2010 Cadillac CTS-V Sedan M6 w/550whp (Build Thread)

02-05-2014, 12:00 AM	#8
DrewIsAmus Member Join Date: Dec 2013 Drives: Dark Grey Metallic 2013 Subaru BRZ Location: Mont Belvieu, TX Posts: 86 Thanks: 29 Thanked 18 Times in 14 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Yep, I'll be getting the HKS front resonated pipe. __________________ My Build Thread

02-05-2014, 12:41 AM	#9
6speed_Sam Thumper Join Date: Dec 2012 Drives: 2013 FRS Location: Huntsville, AL Posts: 250 Thanks: 97 Thanked 59 Times in 42 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I had the rasp come from my catless front pipe once I installed the header. I wrapped my over pipe once and front pipe twice. It got rid of my noise. __________________ Car is gone - parts for sale

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Reducing Rasp	Admired	Engine, Exhaust, Transmission	28	01-25-2014 02:40 PM
Best exhaust rumble - no rasp	DarkestBuddha	Engine, Exhaust, Transmission	5	07-17-2013 03:49 AM
TRD Exhaust Sound Clip	Purdue FR-S	Engine, Exhaust, Transmission	10	03-30-2013 01:34 PM
BRZ exhaust sound!	ilikecars86	BRZ First-Gen (2012+) — General Topics	16	04-13-2012 04:26 PM

02-04-2014, 08:21 PM	#2
jamesm Banned Join Date: Mar 2013 Drives: 2013 FR-S Location: Orlando, FL Posts: 2,929 Thanks: 1,166 Thanked 2,293 Times in 1,180 Posts Mentioned: 313 Post(s) Tagged: 4 Thread(s)	turbo.

02-04-2014, 11:31 PM	#7
shellslinger Senior Member Join Date: Apr 2013 Drives: Whiteout FRS Location: DFW, TX Posts: 597 Thanks: 210 Thanked 310 Times in 186 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	Woah you sure you dont have a Honda? lol jk. But like everyone is saying you need another resonated pipe or go turbo

User Name		Remember Me?
Password