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Old 01-15-2017, 12:36 PM   #1
clark4131
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Default GrimmSpeed Exhaust

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Old 01-15-2017, 02:05 PM   #2
playslikepage71
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This is exciting. Catbacks are a huge seller and major breadwinner. Hopefully this lets them spend more fun money to make cool ****.
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Old 01-15-2017, 03:34 PM   #3
mishapopa
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Gonna start saving for a down payment for this


Last edited by mishapopa; 01-15-2017 at 03:41 PM.
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Old 01-15-2017, 03:46 PM   #4
Boggie1688
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I for one, find that almost all the exhausts sound the same. Crap.

I use a KB J/I catless, nameless mid, with the stock axle. This sounds ****ty, but its relatively quiet until I get on it.

I wonder if the GS exhaust bolts up to the nameless mid pipe...maybe I'd get just the axle portion to see what it sounds like.
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Old 01-15-2017, 05:16 PM   #5
n2oiroc
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it would be nice if someone actually used chambered mufflers. all the aftermarket mufflers use packing and the sound gets louder in time.
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Old 01-15-2017, 06:21 PM   #6
playslikepage71
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Quote:
Originally Posted by n2oiroc View Post
it would be nice if someone actually used chambered mufflers. all the aftermarket mufflers use packing and the sound gets louder in time.
And add backpressure? A properly sized muffler like that with an appropriate resonator upstream would probably stay quiet for a long time. They did say this is the culmination of 2 years of R&D. It would also probably sound really good. I run a resonated midpipe and the stock axlebacks and it sounds great, albeit too quiet. If I had, like I'm speculating the GS exhaust has, two big-ass straight through mufflers like this one does, it would be one of my favorite 4 cylinder noises.
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Old 01-15-2017, 07:27 PM   #7
n2oiroc
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Quote:
Originally Posted by playslikepage71 View Post
And add backpressure? A properly sized muffler like that with an appropriate resonator upstream would probably stay quiet for a long time. They did say this is the culmination of 2 years of R&D. It would also probably sound really good. I run a resonated midpipe and the stock axlebacks and it sounds great, albeit too quiet. If I had, like I'm speculating the GS exhaust has, two big-ass straight through mufflers like this one does, it would be one of my favorite 4 cylinder noises.
Baffled doesnt exactly mean restrictive. See flowmaster as an example. Muffler packing wears with time, There is no way around that.
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Old 01-15-2017, 10:13 PM   #8
Cisco Kidd
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Quote:
Originally Posted by Boggie1688 View Post
I for one, find that almost all the exhausts sound the same. Crap.

I use a KB J/I catless, nameless mid, with the stock axle. This sounds ****ty, but its relatively quiet until I get on it.

I wonder if the GS exhaust bolts up to the nameless mid pipe...maybe I'd get just the axle portion to see what it sounds like.
Guess that's your own personal opinion right I like my own setup currently and find the sound great with an Sti mid , factory mufflers and MAP catted jpipe. Had an N1 nual, loved the sound but I knew that once a j pipe was to be added it would be too loud for me. Dependent on the price of this GS I would consider it with my STI midpipe, I think it will as we know be quality but its the cost that scares me.. but quality costs right....
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Old 01-15-2017, 11:06 PM   #9
mishapopa
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Quote:
Originally Posted by Boggie1688 View Post
I for one, find that almost all the exhausts sound the same. Crap.

I use a KB J/I catless, nameless mid, with the stock axle. This sounds ****ty, but its relatively quiet until I get on it.

I wonder if the GS exhaust bolts up to the nameless mid pipe...maybe I'd get just the axle portion to see what it sounds like.
sounds better than a honda...

Quote:
Originally Posted by Cisco Kidd View Post
Guess that's your own personal opinion right I like my own setup currently and find the sound great with an Sti mid , factory mufflers and MAP catted jpipe. Had an N1 nual, loved the sound but I knew that once a j pipe was to be added it would be too loud for me. Dependent on the price of this GS I would consider it with my STI midpipe, I think it will as we know be quality but its the cost that scares me.. but quality costs right....
i get all excited when i start my car, sounds cool as hell with the MAP full TBE but after ~15 minutes of driving i just turn up my music because the exhaust sound gets annoying lol. i'm sure all 3" TBEs for the 2015+ wrx sound more or less the same.
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Old 01-16-2017, 12:01 AM   #10
n2oiroc
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Quote:
Originally Posted by mishapopa View Post
sounds better than a honda...



i get all excited when i start my car, sounds cool as hell with the MAP full TBE but after ~15 minutes of driving i just turn up my music because the exhaust sound gets annoying lol. i'm sure all 3" TBEs for the 2015+ wrx sound more or less the same.
The cobb is pretty close to stock but deeper. Q300 is also pretty quiet. Add in a j pipe and they all get louder obviously.
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Old 01-16-2017, 01:46 AM   #11
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I have the Cobb turboback and it sound nice and tame after it warms up. The thing I hate is the first start up in the morning. It revs up to about 2200 for about 15 seconds and it's so loud I feel sorry for the neighbors. I mean really loud.
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Old 01-16-2017, 02:32 AM   #12
15WRXNoob
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Cattless GS J pipe and Tomei Expreme Ti here.... Its loud enough.
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Old 01-16-2017, 06:17 AM   #13
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Quote:
Originally Posted by subarulz! View Post
I have the Cobb turboback and it sound nice and tame after it warms up. The thing I hate is the first start up in the morning. It revs up to about 2200 for about 15 seconds and it's so loud I feel sorry for the neighbors. I mean really loud.
Your tuner can turn off the stratified warm up in your tune if you wish
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Old 01-16-2017, 08:35 AM   #14
ericdet
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Quote:
Originally Posted by subarulz! View Post
I have the Cobb turboback and it sound nice and tame after it warms up. The thing I hate is the first start up in the morning. It revs up to about 2200 for about 15 seconds and it's so loud I feel sorry for the neighbors. I mean really loud.
My Bone stock car is too loud at initial startup. I can't imagine how loud yours is.
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Old 01-16-2017, 09:09 AM   #15
miltni
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My tuner got rid of the cold start. There are times when I miss it but I'm pretty sure my neighborhood is much happier when I leave for work at 730
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Old 01-16-2017, 11:05 AM   #16
playslikepage71
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It's pointless to have if you don't have TGVs and that's a pretty common mod around here.
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Old 01-17-2017, 09:27 AM   #17
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It does look like they've used stock location fanges on the axle back portion, so maybe they do plan to offer an axle back only option or perhaps multiple axle back options and perhaps the ability to eat some of nameless' lunch with a lower cost mid pipe that can be used with existing axle back exhausts that are so many people's first Subaru mod
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Old 01-17-2017, 09:34 AM   #18
Discard_WRX
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Listed for the GV as well. Color me interested.
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Old 01-17-2017, 10:58 AM   #19
GrimmSpeed
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Quote:
Originally Posted by uofime View Post
It does look like they've used stock location fanges on the axle back portion, so maybe they do plan to offer an axle back only option or perhaps multiple axle back options and perhaps the ability to eat some of nameless' lunch with a lower cost mid pipe that can be used with existing axle back exhausts that are so many people's first Subaru mod
Nah, we're definitely not interested in eating Nameless' lunch. The guys at Nameless know us by name, and vice-versa. The mutual respect is very real

Not that has anything to do with this exhaust though... But it will NOT fit stock location exhaust. That means no fitting of your own midpipe, and no axle-backs. While the two bolts are in a nearly stock location, the stock exhaust has a very steep upward flange angle in that area. Being able to accommodate that angle would mean sacrificing muffler fitment. And by that I mean we have fitted the longest custom muffler we could in this area. I'll post more info later, but this exhaust is very much routed for a reason.

Quote:
Originally Posted by Discard_WRX View Post
Listed for the GV as well. Color me interested.
I know right? We've had a couple GV prototypes out and about for months now too.

I'll keep posting more info and even answering questions, but honestly I need to get back out there and work on the final production fixtures. Everything has been going well, and we're getting to the very last stretch, but people who are familiar with GrimmSpeed know that we are very picky about quality and fitment. So spending a couple weeks perfecting fixtures is pretty normal

Chase
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Old 01-17-2017, 01:39 PM   #20
mrsdoubtfire613
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It's been 2.5 years with my car stock and I think it's finally time for some performance parts. Can't wait to hear how this sounds!

Quote:
Originally Posted by GrimmSpeed View Post
Nah, we're definitely not interested in eating Nameless' lunch. The guys at Nameless know us by name, and vice-versa. The mutual respect is very real

Not that has anything to do with this exhaust though... But it will NOT fit stock location exhaust. That means no fitting of your own midpipe, and no axle-backs. While the two bolts are in a nearly stock location, the stock exhaust has a very steep upward flange angle in that area. Being able to accommodate that angle would mean sacrificing muffler fitment. And by that I mean we have fitted the longest custom muffler we could in this area. I'll post more info later, but this exhaust is very much routed for a reason.



I know right? We've had a couple GV prototypes out and about for months now too.

I'll keep posting more info and even answering questions, but honestly I need to get back out there and work on the final production fixtures. Everything has been going well, and we're getting to the very last stretch, but people who are familiar with GrimmSpeed know that we are very picky about quality and fitment. So spending a couple weeks perfecting fixtures is pretty normal

Chase
Engineering
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Old 01-18-2017, 04:10 PM   #21
idiosyncrisia
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So glad I have been waiting on a cat back. I've been real close to getting a Tomei but man, I think I will wait quite a bit longer for this
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Old 01-18-2017, 05:48 PM   #22
discodan
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Will axle back be an option? Or cbe only?
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Old 01-19-2017, 10:50 AM   #23
dwelker
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Will axle back be an option? Or cbe only?
They just posted above saying it will not be available as an axle-back. Catback only.
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Old 01-19-2017, 10:56 AM   #24
djemzine
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Big mufflers
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Old 01-19-2017, 01:00 PM   #25
playslikepage71
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Quote:
Originally Posted by GrimmSpeed View Post
Being able to accommodate that angle would mean sacrificing muffler fitment. And by that I mean we have fitted the longest custom muffler we could in this area. I'll post more info later, but this exhaust is very much routed for a reason

Chase
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Quote:
Originally Posted by djemzine View Post
Big mufflers
Uh, yeah.
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