Exhaust too loud need another alternative
 

Hi all,

Over the course of modding my car Aus 2013 BRZ

I installed Namelss headers and KLS overpipe rest of the system stock with ECUTEK.

Result bit more power and a tad louder making 169HP

To maximize this I decided to go all out and get an SME front pipe and a Greddy Evo 3 exhaust.

After changing the front and cat back. Driving the car after install the car was pretty loud. I got home and put the Silencers in and well its better but we all know Silencers restrict back pressure and its still a tad loud for me.


So after researching on here and other pages it seems that Invida Q300 may be my solution to just lower the noise to a more stock level again.


Anybody have a similar setup and can offer some advice cheers

I went with the HKS quiet front pipe and Perrin resonated cbe. Makes a nice sound, though it is still considerably louder than stock.

Why not just put the stock catback back on.?

Because stock is still restrictive in terms of chasing every HP from N/a


Sent from my iPhone using Tapatalk

Doubt the stock cbe is any more restrictive than the q300

No evidence of this.

you can also wait and hope that this cat back developed by CSG / ACE is going to get produced:
http://www.ft86club.com/forums/showthread.php?t=95331

Yeah I think stock is just fine for NA. Just get the Perrin 4" tips for the stock exhaust OR if you need more sound lol... get the Q300
Im running stock CBE with a UEL header and E85 and was getting 205whp


FOR EXAMPLE: My Stock Catback with the Perrin 4" Tips
https://dl.dropboxusercontent.com/u/...2017.06.07.jpg

I suggest you take advantage of the wealth of knowledge on this site re: exhaust dynamics.

Modern engines like ours do not use backpressure in the exhaust system for power or anything else. It's a question of exhaust capacity and flow rate. A silencer probably does affect exhaust dynamics, but most likely to a negligible extent.

For the record, the stock catback is pretty good and there are plenty of people running catless headers/fp/op with stock catback - cross-flow mufflers are quiet.

Sent from my SAMSUNG-SM-G925A using Tapatalk

Stock catback is not restrictive, last dyno day guy with stock catback made most power.

stock catback will be quiter than Q300

put the stock one back on if it too quiet and you dont like the sound then try the q300

Thanks all yes, my assumption is yes stock would be more restrictive. or maybe it was a weight saving thing. either way its a tad too loud for me even with sliencers.

Some good advice and will put the stock one back on and then consider the Q300

Your tune affects your noise as well. Have you been re-tuned since you upgraded your exhaust? You might get more power, and a quieter exhaust.

Unfortunately that's a $400 retune gamble i'm not willing to take. Another member had similar setup but with tomei 60s even after retune it was still loud.

The headers would do it. Go FI, that should make it quieter and get rid of the crappy raspy sound that NA gives you.

If he can't afford $400, how is he going to afford $4000 for FI? I have a Top Speed Pro 1 axle-back muffler, http://www.ebay.com/itm/Scion-FRS-Su...28ff5d&vxp=mtr , and it sounds just fine. BTW, I have no cats, a PLM nameless long tube header knockoff, a 2.5" Pro 1 overpipe, and a stock mid-pipe. It's a bit loud at full song, but it's quiet otherwise with no highway drone. I even got it to hang right the last time I reinstalled it.

If anyone catches this comment and wants to chime in for me as well, I'd be happy, just looking for a little help.
I'm just looking for something that changes the tone but importantly still quiet at slow cruising rpms. Basically the car's a DD most of the time so something quiet down low would be great. Without going active which isn't a common route anyways. Not chasing any gains or too much noise gain just a tone change. Doesn't matter axle or catback either.
The biggest challenge is that there's so many options out there and sound over video just doesn't translate well. Pretty much all cameras auto level sound. I'm still doing my research but actual experiences beats research.
As for engine drivetrain, it's stock.

EDIT: Below thanks. I didn't look too hard at them because haven't met anyone with it yet and they sounded loud in videos. But yeah, if that's the consensus, I think that's good enough for me.

I think the general consensus is that the Invidia Q300 is the quietest aftermarket setup. Someone who actually owns one can chime in, but I think that might be the ticket.

IMO, the most important thing is to look for something with a resonator. my MXP catback is pretty quiet to the point where I barely hear it at idle with the windows down (can't hear it at all with the windows up) and when you get on the gas, you can definitely hear the deep sounding tone. I don't know what you classify as quiet though, but I think the MXP is pretty quiet that it doesn't annoy you. my old MR2 had a berk exhaust and that thing would drone pretty bad on the freeway, not to mention that it didn't have AC so I had windows down most of the time and had to deal with wind noise on top lol

perrin and invidia are both good brands to go for in terms of quietness

CSG and ACE are co developing an axleback that is quieter than all exhausts currently out there.

The problem with the stock axle back is the baffles rattle and vibrate like crazy when you delete all cats in the exhaust system and this causes horrible noises. The ACE muffler will solve this issue.

Went with invidia Q300 best choice in the end, not to loud no drone, gentle to my ears


Sent from my iPhone using Tapatalk

Here's the best of both worlds, take the stock muffler slice it open, cut off all the tubing inside and seal back up, frees up flow and retain a quiet but noticeable improvement with little out of pocket

SC10N driver

Use sound deadening material on the inside of your doors. :)