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Old 05-08-2019, 03:47 PM   #4626
YungBoba
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Originally Posted by OhThatHurt View Post
Anyone have first hand feedback about the Cobb SS vs Ti catback mated to a Cobb catted downpipe (or equivalent) on a 2015+ STi?

Unfortunately I do not know anyone in my area that has either, so I can't hear in person. My goal is slightly louder that stock and not excessive especially in the 2500-3500 RPM range.

I have reached out to Cobb and they say both catbacks are the same loudness, but the Ti version has a deeper tone. I would think they would have a different sound through the RPM range since they are made of different metals and one is resonated and the other is not.

I also read conflicting reports comparing Cobb to Q300 saying each is quieter that the other. I have listened to all the YouTube videos, but that is not the same as in person.
Q300 is definitely quieter than the Cobb. Q300 is probably the quietest aftermarket catback you can get. The Cobb and Grimmspeed would be a step above it in terms of loudness.

I am of course referring to the regular dual-piped, quad-tipped exhaust. I can't comment on the single-exit Q300.
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Old 05-12-2019, 03:02 AM   #4627
wuuusaa
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Originally Posted by IronmanDaremo View Post
Just put on the resonated single exit Invidia Q300. I'd hazard a guess that it is as quiet as stock under normal use inside the car, if not a little quieter! But still gives the 3" all the way back performance, and sounds great under harder acceleration.

And that is with a resonated, no cat j-pipe.


Post up some videos, have to hear that one
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Old 05-14-2019, 02:41 PM   #4628
osidesuby1
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straight pipe
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Old 05-23-2019, 09:26 AM   #4629
rst.ack
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Leaning more and more towards the Nameless CBE. Deciding between the 4" or 5" mufflers has me going round in circles though so I'd like opinions on my thought process. I probably sound like a broken record asking for opinions on similar things over and over again but I want to make sure I make the right decision.

From what I've read the 4" muffler CBE would be the perfect volume I'm after, however I'm trying to prepare for the possibility of converting to a TBE by adding a downpipe in the (somewhat distant) future.
With that in mind, my thinking is that by going with the 5" muffler and losing a little volume up-front, I can get a similar volume as the 4" muffler by adding that downpipe later down the road.

Thoughts?

EDIT: Just found out about the Corsa exhaust and it sounds promising - a couple of questions for those in the know:

* Compared with other exhausts, how loud is it at WOT with a stock J-pipe?
* Compared with other exhausts, how loud is it at WOT with an aftermarket catted J-pipe?
* In your opinion, does the Corsa have a more refined/less ricey tone than the Nameless CBE/TBE?

Last edited by rst.ack; 05-25-2019 at 11:13 AM.
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Old 05-31-2019, 07:42 AM   #4630
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I ended up ordering the 5" muffler / 4" double-wall tip catback from Nameless (to avoid being obnoxiously loud if I choose to install a J pipe down the line) after contacting them and asking what the lead time would be.

Apparently I got in at exactly the right time, because, true to their word, they've already made the axleback, and just have the mid-pipe to go. They say it should be ready to ship in the next couple of days.

Is there anything you guys want to see, i.e. installation pics or running vids?
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Old 05-31-2019, 10:25 AM   #4631
OhThatHurt
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Quote:
Originally Posted by YungBoba View Post
Q300 is definitely quieter than the Cobb. Q300 is probably the quietest aftermarket catback you can get. The Cobb and Grimmspeed would be a step above it in terms of loudness.

I am of course referring to the regular dual-piped, quad-tipped exhaust. I can't comment on the single-exit Q300.
I ended up buying a low miles used Cobb SS catback. For me it is perfect. Not too loud or quiet. I have the Cobb catted downpipe installed on my STi, too. Before getting the Cobb CBE I installed the stock catback. It is very quiet, actually too quiet. If I have the radio volume turned up I had to use the tach to know when to shift. I also had a used Q300 quad tip. The Cobb CBE is generally quieter than the Q300 I had, especially at cold start and 2500-3500 cruising up hills on the highway. The Q300 was used, so the baffles may have already been blown. Both Cobb and Q300 are a lot quieter than the AWE Touring. The AWE Touring is quite loud, but has a very cool unique exotic note and also pops and crackles on downshifts. I would still be running the AWE if I were younger when volume did not bother me.
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Old 06-03-2019, 02:21 AM   #4632
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Went from stock exhaust to Corsa catback on 2018 STI. Still running stock downpipe.

I was worried that for the price the Corsa wouldn't be much louder than stock. I wanted an exhaust that was "on" / "off" and capable of being quiet. While waiting for the exhaust to arrive I got cold feet and started thinking I made the wrong choice. That it wouldn't be much different from stock. My concerns were unfounded, it is plenty loud. Over 3000 it's a rush, under 3000 it's fairly mild but definetly louder than stock. You hear the exhaust now, with stock I couldn't.
I've yet to hear it from the exterior but I have had some attention from pedestrians accelerating that I didn't get with stock.

No law enforcement issues because it's fairly easy to control volume by staying under 2000 rpm. That said the country I live in (Spain) is full of conventional fart canned 4 cylinders and likely the police have given up on noise regulations.

Been driving the past month since install with the rear seats down to hear it more. Decided to put them back up as both my girlfriend and I have some ear pain after spirited drives.. Rear seats are a fantastic inexpensive volume control with seats up it's still loud just takes the edge off the bass "pressure" present in the car with the windows up.

It is not completely drone free as some have claimed but doesn't bother me. I have limited experience with other aftermarket STI exhausts though, so it may in fact be drone free relative to others but I wouldn't know. The only other exhaust outside of stock I have experience with is an N1 exhaust on a friend's `07. But this was years back. I'm sure the N1 was louder but subjectively - and passed through a hazy memory - the Corsa feels loud too.

Resonator on the mid pipe is large. I have scraped it once coming out of a very steep parking garage exit ramp. Forgot to exit diagonally. Have had no issues with speed bumps so far - which here tend to be giant mounds of irregular concrete.

The mechanic who did the install commented that it was louder than he expected with a stock downpipe. He's used to doing Q300 + downpipe installs. This was on a first cold start after install though. It does quieten down after.

I'm very happy. I would say the sound is somewhat refined. Friends have commented it sounds like a stock exhaust in the sense that it isn't noise for the sake of noise. "Quality" sound.

Revmatching on downshift is thrilling, it audibly burbles and pops everytime. This is my favourite part of the exhaust. Even sedate daily driving pulling upto traffic lights feel special.

I have a decent recording of the stock exhaust with an external mic and an interior gopro. Planning to do a redo with the Corsa at some point on the same road. Posting that will hopefully hold me to it
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Old 06-04-2019, 05:24 PM   #4633
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Quote:
Originally Posted by Dmman View Post

I have a decent recording of the stock exhaust with an external mic and an interior gopro. Planning to do a redo with the Corsa at some point on the same road. Posting that will hopefully hold me to it
I'd love to hear it! Thanks for the very detailed review.
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Old 06-06-2019, 01:52 PM   #4634
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I'm going to be the oddball here and recommend the ARK exhaust... it's expensive, probably doesn't sound as 'mean' as some of the other options, but the fact they have a 'zero drone' design of the mufflers makes it a huge selling point. I regret not going ARK. My '15 STI had the Nvidia R400, looked badass but the drone was awful.
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Old 06-06-2019, 05:59 PM   #4635
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Originally Posted by Diamond Skyline View Post
I'm going to be the oddball here and recommend the ARK exhaust... it's expensive, probably doesn't sound as 'mean' as some of the other options, but the fact they have a 'zero drone' design of the mufflers makes it a huge selling point. I regret not going ARK. My '15 STI had the Nvidia R400, looked badass but the drone was awful.
i have the R400 on my '16 WRX Limited and it isnt bad... but i do have the Limited with the additional noise cancelling interior (which I believe they made standard in the later years?). i can see how it would be loud if not for my additional noise cancelling though for sure.
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Old 06-08-2019, 03:33 PM   #4636
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Quote:
Originally Posted by Diamond Skyline View Post
I'm going to be the oddball here and recommend the ARK exhaust... it's expensive, probably doesn't sound as 'mean' as some of the other options, but the fact they have a 'zero drone' design of the mufflers makes it a huge selling point. I regret not going ARK. My '15 STI had the Nvidia R400, looked badass but the drone was awful.
Same experience with R400. Had it on my car (catless downpipe too) for about 12 hours and I removed it and sold it. Loved the look and the sound, but the cruising drone was unbearable for my aging self.
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Old 06-11-2019, 12:20 AM   #4637
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Quote:
Originally Posted by Diamond Skyline View Post
I'm going to be the oddball here and recommend the ARK exhaust... it's expensive, probably doesn't sound as 'mean' as some of the other options, but the fact they have a 'zero drone' design of the mufflers makes it a huge selling point. I regret not going ARK. My '15 STI had the Nvidia R400, looked badass but the drone was awful.


I have the DT-S on my Ď17 STI and absolutely love it. They are currently running some great deals for Subaruís at almost 50% off.
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Old 06-13-2019, 08:52 PM   #4638
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Has anyone made their own muffler deleted yet? Basically using the muffler tips and flanges and replacing the muffler section with straight piping? It allows you to retain the oem look but be louder. I have a set of spare mufflers I might try it. Just have to make a holding jig so when I cut the muffler out everything will still line up correctly.
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Old 06-22-2019, 02:28 AM   #4639
rst.ack
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After only a couple of weeks waiting for them to fabricate it, my nameless catback with 4" tips and 5" mufflers arrived in the mail yesterday. Fitted it this morning. It only took me about 3 hours in total rolling around on my back (I only had the car resting on jack stands). The first 45 minutes or so was needed to remove the stock catback.

TL;DR: Use silicone lube for the exhaust hanger bushings, and make sure you tighten the shizznit out of the bolts that attach the mid-pipe to the stock j-pipe. The volume and tone are just about perfect for my taste (and my country's sound laws), and I wouldn't be worried about noise levels if I added a j-pipe in future.

---

Silicone lube spray works wonders for getting the exhaust bushings on and off their hangers, with the help of a pair of channel-locks to pry them off. After spraying some lube on the hanger and bushing, open the channel-locks up quite a bit and use one side of the jaw to press against the tip of the metal hanger, and the other side of the jaw to press against the bushing. You may need to adjust the positioning a couple of times but its better than trying to pry them off by hand.

The fiddliest part was aligning the muffler tips - this took me the better part of an hour, not only because they didn't seem to want to sit evenly, but I noticed that the v-band clamp that secures the y-pipe to the s-pipe was touching the rear diff. I loosened the up-stream v-band and rotated the s-pipe a little and now there's about a 10mm gap between the diff and the rear v-band. The height of the tips is the same now, but the left-hand tips are slightly further to the outside than the right-hand-side tips, but it's not really noticeable unless you know it's there or are looking for it.

The first start revealed a slight leak from the donut gasket (I could see condensation bubbling at the bottom of the donut gasket). Got back under the car, loosened the bolts and tightened them again in case the flange wasn't seated properly. One piece of advice: the instructions say these bolts need to be "very tight." They're not kidding. I think I must have tightened them twice as much the second time around. Thankfully the donut gasket seems to have the slightest amount of "crush" when tightening those bolts. I assume this is to allow some conformity and provide a better seal.

The best part is the sound and volume! The exhaust tone is vastly improved; a much richer sound. Volume is just about perfect, too; it's not quiet but it's not that loud that I would hesitate to add a j-pipe in the future. With the radio off and the windows up it's quite easy to hear the engine while accelerating, even if I'm just lightly accelerating. There is no noticeable drone while cruising; even though I can hear the exhaust a little bit with the radio off, it can be drowned out with some music playing at a reasonable volume. That said, I could still hear the exhaust while accelerating, which I like!

I haven't measured the volume of the exhaust (partly out of laziness, partly because an meter that hasn't been calibrated would only give a rough idea of sound levels), but if anyone is interested let me know and I'll give it a go.

Overall, I'm very happy so far!
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Old 06-24-2019, 02:46 AM   #4640
SeriesGrayAlex
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I have the AWE Touring Edition with the Diamond Black Tips, sounds amazing and I would recommend it to anyone. Its loud, but still quiet from inside the car.
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Old 06-24-2019, 03:09 PM   #4641
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Purchased the Carven Single Exit and it got delivered today. I am 100% scared that I won't like it seeing that no one is running it. Plus I'm running ETS Extreme right now and if it's not not loud enough it may be a problem...
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Old 06-24-2019, 03:14 PM   #4642
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I bought the Borla for my 19 STI and very happy with it. I found the fit perfect and sounds perfect.
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Old 06-24-2019, 08:34 PM   #4643
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Is anyone here running the STI resonated mid pipe with muffler deletes ? I recently took off the deletes because of the 3K drone but now I have a chance to pick up a resonated mid pipe from the STI for cheap. I wanted to is the resonated mid pipe would make a difference. Also, for you guys that are pro/etuned, would a resonated midpipe need a touch up ? Not sure if I want to go thru the trouble. Thanks in advance.
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Old 06-28-2019, 05:09 PM   #4644
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19 STi: just installed an HKS Legamax last weekend and to me, it's perfect, especially if you're looking for a quiet exhaust option. Much deeper tone than stock, but only slightly louder at normal cruising speeds with the windows up. With the windows down, it's louder to the point where it drowns out the usual transmission and diff noise and just barely overcomes the engine noise- moreover, it allows you to still hear other parts of the car without the exhaust noise being overbearing. To my ears, the tone sounds like a quieter Cobb catback and best of all, it gives the occasional pop on a hard 1-2 shift and burbles when down shifting. The only negative is the 'slight' drone at 3k rpm on the highway, but compared to other options, it's definitely not bad and can be drowned out with music.
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Old 07-01-2019, 08:32 AM   #4645
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Purchased the Carven Single Exit and it got delivered today. I am 100% scared that I won't like it seeing that no one is running it. Plus I'm running ETS Extreme right now and if it's not not loud enough it may be a problem...
So? How is it. Interested in your opinion.
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Old 07-01-2019, 11:48 PM   #4646
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Originally Posted by nevernudedrew View Post
So? How is it. Interested in your opinion.


Itís going to be loud ass eff. I have one and itís way louder than the Tomei. I ended up having to put a resonator on mine. It killed some of the sound but it still sounds good. I like it better than the greddy RS race.

My car has a 3Ē catted DP.
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Old 07-02-2019, 01:05 AM   #4647
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Quote:
Originally Posted by nevernudedrew View Post
So? How is it. Interested in your opinion.
So, here's the breakdown: I like it a lot more than the ETS Extreme. It's not as loud, which I don't like as much, but the Extreme with no resonator was driving me nuts. As far as looks go, I love the aggressive angle it has, and how far it sticks out.

But the company either has 0 Quality Control of their products or mine just happened to be the worst one available. None of the slip connections fitted properly; I had to hammer the inside of the connections in order to expand them because it was too tight of a fit. I may have a small leak due to it that I have to check out. It just so happens that I'm getting high knock after installing it and going WOT.

I plan on getting my car tuned soon, so if it's not the exhaust, it'll get fixed. If it is, I will have to take it to a muffler shop and see if they can properly fit it. Depending on the cost (anything over $100), I will probably sell it and buy a used Tomei, even if I lose money on it.

Overall:
Sound 8/10
Looks 9/10
Fitment 3/10 (the product wouldn't fit on itself, and if I hadn't had the tools available I'd be running my exhaust off a downpipe only right now)
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