Definitive Exhaust Thread - Gen 2

[Silver Ecstasy]

A lot of the exhausts sound real nasty, gutter-sounding, raspy.

The VAST exhaust sounds great imo.

[forcedinduktion]

exactly! especially when fully catless

[Silver Ecstasy]

I'm all about an exhaust sounding BETTER than stock, not full-out shittier than stock.

[BigJimMs3]

This was alittle pull in 3rd gear at wot...

‪My 2010 Mazdaspeed 3‬‏ - YouTube

‪My 2010 Mazdaspeed 3‬‏ - YouTube

[adrager622]

Originally Posted by RODSCALIMS3 As promised, will get better clips later....... &#x202a2010 MS3 Racing Beat CBE&#x202c‏ - YouTube

I honestly think that hearing this vid soldified me getting this exhaust. Sounds sick in my opinion and looks good.

[skeurton]

I just checked out the Corksport site today and it looks like the CBE has gone through a redesign:



Looks like there are now two smaller mufflers instead of one large one. I'm wondering if this now works with the stock chassis brace, as it doesn't look like it includes their brace anymore either.

Kinda interesting because I recently sent an email to Derrick about my exhaust actually contacting and resting on top of their brace. It doesn't rattle or anything, but I discovered this over the weekend only because I got underneath to replace one of the the donut gaskets. Just sent him an email asking about this redesign, too. Will update if I find anything out.

[wolly6973]

That's kind of weird. The one tip has a 2nd muffler on it, while the other just has the 1 upstream...

[stang9779]

Originally Posted by wolly6973 That's kind of weird. The one tip has a 2nd muffler on it, while the other just has the 1 upstream...

I just installed my CS CBE a few weeks ago. You dont need the brace anymore. the drivers side only gets one muffler and the passanger side goes through two. It still sounds nice and is louder then the stock.

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[jwilkins88]

jwilkins88 exhaust:

First Start - GT35 - YouTube

First Start - GT35 - YouTube

[f-castrillo]

This might be a longshot, but does anybody have the sound levels (dB) for the stock cat back, CP-e's turbo back, Corksport's CBE, and any other relevant TBE/CBEs? Part of me wants to upgrade the CBE to compliment my CNT catted DP, but I don't want something that will significantly increase sound levels over stock.

[jwilkins88]

Originally Posted by f-castrillo This might be a longshot, but does anybody have the sound levels (dB) for the stock cat back, CP-e's turbo back, Corksport's CBE, and any other relevant TBE/CBEs? Part of me wants to upgrade the CBE to compliment my CNT catted DP, but I don't want something that will significantly increase sound levels over stock.

Then why upgrade the catback? Until you hit like 350+ whp, the stock catback is fine on these cars. It's simply an upgrade for sound

[f-castrillo]

Originally Posted by jwilkins88 Then why upgrade the catback? Until you hit like 350+ whp, the stock catback is fine on these cars. It's simply an upgrade for sound

I'm reading reports that go both ways, that the stock CBE flows well up to 350whp. But I've also seen a few reports here that said that there was a decent bump in MAF g/s from an aftermarket cat-back alone.

Still, in the event that I do hit 350whp (we'll see), I don't want to upgrade to a cat back that makes the car obnoxiously loud. I like the gurgle associated with the CS CBE, but I don't want much of the increased volume that comes with it.

[adlpb]

Originally Posted by f-castrillo I'm reading reports that go both ways, that the stock CBE flows well up to 350whp. But I've also seen a few reports here that said that there was a decent bump in MAF g/s from an aftermarket cat-back alone. Still, in the event that I do hit 350whp (we'll see), I don't want to upgrade to a cat back that makes the car obnoxiously loud. I like the gurgle associated with the CS CBE, but I don't want much of the increased volume that comes with it.

The "deepest" is given by the UR CBE. But it is also loud, not annoyingly loud but definitely louder than stock. If you keep your windows up and turn the radio up to about 25-30, you can barely hear it when highway driving. In the city, you'll be able to hear it a bit more. Windows down, you can definitely hear it.

The only annoyance I've found is the first 20 seconds or so when cold-starting the car. It is LOUD. After that it goes back to normal.

But if you want a kinda deep tone with almost stock volume, look into CS and Magnaflow (be aware that magnaflow tapers the pipe down to 2.25 inches)

[jwilkins88]

+1

The CS is pretty mellow when cruising and idling. You know it's there, but it's not obnoxious

[Monotonous ONE]

The design on the corksport is interesting.

It appears to have a muffler and then when the pipes separate...theres another muffler on only one side.


I find that very interesting...maybe they are trying to quiet it down a tad. Or maybe give two different tones at once...i dunno...crazy

[f-castrillo]

Originally Posted by jwilkins88 +1 The CS is pretty mellow when cruising and idling. You know it's there, but it's not obnoxious

I've been eyeing the CS CBE for a while now. That might be in the car's future in the next 6 months or so. As long as I can cruise on the freeway for extended periods of time without going deaf or the gf complaining about noise.

Here's a video of the Mazdaspeed CBE on my older 3. My gf complains about how loud it can get sometimes, though I wonder if it's really just because there's no power to back up the sound lol. I know it's a kind of difficult to compare my old CBE to Corksport's CBE for the MS3, but if anybody had the MS CBE on an older 3 in the past that has the CS on their Speed3 now, feel free to chime in

Mazdaspeed cat-back - YouTube

Mazdaspeed cat-back - YouTube

[Silver Ecstasy]

Originally Posted by adlpb Magnaflow (be aware that magnaflow tapers the pipe down to 2.25 inches)

Tapers to 2.5", not 2.25".

[adlpb]

Originally Posted by Silver Ecstasy Tapers to 2.5", not 2.25".

You're incorrect. Click here Definitive Exhaust Thread

[Silver Ecstasy]

Originally Posted by adlpb You're incorrect. Click here Definitive Exhaust Thread

I've been going back and forth on this. I'm just going to email Magnaflow to get to the bottom of it.

[wolly6973]

Originally Posted by f-castrillo I've been eyeing the CS CBE for a while now. That might be in the car's future in the next 6 months or so. As long as I can cruise on the freeway for extended periods of time without going deaf or the gf complaining about noise. Here's a video of the Mazdaspeed CBE on my older 3. My gf complains about how loud it can get sometimes, though I wonder if it's really just because there's no power to back up the sound lol. I know it's a kind of difficult to compare my old CBE to Corksport's CBE for the MS3, but if anybody had the MS CBE on an older 3 in the past that has the CS on their Speed3 now, feel free to chime in

If you don't want it to be loud, don't get the CS. I bought it when it first came out, and took it off after the first day.
It sounds awesome, but it gave me a headache to drive the car.
Drone was fine when cruising, but under part throttle it was loud as hell, even louder than WOT.

[f-castrillo]

Ho hum, I guess I'll wait for some more clips of the Racing Beat exhaust. It sounds pretty quiet, although it lacks the gurgle the CS has

[adlpb]

Honestly, video clips don't do much justice. They'll give you a good idea of what the tone is, but not the volume. Most cameras tend to silence them down. You really have to hear it in person to have an idea. See if any pu's near cali want to show you.

[skeurton]

I have to agree with many of the comments about the CS CBE. With the stock DP/TP, it actually wasn't too bad. It was actually just right, IMO. But after I installed the UR DP and CS RP, shit got LOUD. I mean, I knew it would be louder, but didn't think it would be this loud. Or maybe "loud' has just taken on a different definition now that I'm older. But it still sounds great as far as tone. Like @adlpb said, videos and sound clips really only convey the tone, not volume.

And as @wolly6973 said, it's especially loud at part throttle or if you're engine braking. Idle is just as quiet as stock and cruising anywhere below 3K RPM is fine. I've had some cold starts that were RIDICULOUSLY loud, but hasn't been as bad lately since the past few mornings have been warm. I don't even want to think about what it will be like once winter rolls around.

I've only had the new DP/RP in for 2 weeks, but I'm contemplating the idea of swapping out the CS CBE for something else. I'm gonna give it some more time, though, before making a decision.

[stang9779]

I have a new cs cbe with a cnt downpipe and it is not loud. it's a little bit louder than stock but not too bad. maybe the second muffler has quieted down.

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[dizzydtrain]

Pretty sure the Corksport is considered the loudest exhaust for the Gen2 followed by the UR exhaust. There have been a few members who have gotten rid of the CS exhaust due to the volume increase. Also, any of the aforementioned exhausts sound pretty good and are mellow enough with the stock dp. The dp is the single most restrictive exhaust component on this car and freeing that up will in-itself give you a)great gains and b) increase in sound output even with just the stock exhaust.

Like someone mentioned before, most these clips don't do any of the exhausts justice. I have the stock cbe with a cobb dp and the first thing my gf asked me was "what did you do to your car?". The only thing I hate about the stock exhaust are the smaller tips.

Cold starts are loud as fuck too for me right now. My car is parked on the street and I can hear it in my house when remote starting the car.

If i had to rate (based on user feedback on this site) the most popular cbe from loudest to least, it would go something like this:

CS
UR
Cp-e
Magnaflow

[skeurton]

I forgot that UR makes a resonated test pipe. I may go this route as far as trying to reduce volume.

[wolly6973]

I really like the Magnaflow. Slight increase in volume, nice deep tone.
The only thing I would wish for is a little more at WOT.

[f-castrillo]

Originally Posted by skeurton I have to agree with many of the comments about the CS CBE. With the stock DP/TP, it actually wasn't too bad. It was actually just right, IMO. But after I installed the UR DP and CS RP, shit got LOUD. I mean, I knew it would be louder, but didn't think it would be this loud. Or maybe "loud' has just taken on a different definition now that I'm older. But it still sounds great as far as tone. Like @adlpb said, videos and sound clips really only convey the tone, not volume. And as @wolly6973 said, it's especially loud at part throttle or if you're engine braking. Idle is just as quiet as stock and cruising anywhere below 3K RPM is fine. I've had some cold starts that were RIDICULOUSLY loud, but hasn't been as bad lately since the past few mornings have been warm. I don't even want to think about what it will be like once winter rolls around. I've only had the new DP/RP in for 2 weeks, but I'm contemplating the idea of swapping out the CS CBE for something else. I'm gonna give it some more time, though, before making a decision.

Keep us posted on what CBE you end up swapping out for. I'm trying to avoid going deaf this winter lol

Originally Posted by stang9779 I have a new cs cbe with a cnt downpipe and it is not loud. it's a little bit louder than stock but not too bad. maybe the second muffler has quieted down. Sent from my SCH-I510 using Tapatalk

Any further impressions? Do you have the catted or catless DP? For you, how was the jump in sound level from stock DP to CNT DP? And from CNT DP + CBE to CNT + CS?

Originally Posted by skeurton I forgot that UR makes a resonated test pipe. I may go this route as far as trying to reduce volume.

That looks like a good idea. Unfortunately, the CNT DP I have installed comes with a welded RP/TP section, so I probably need to go to a shop to have them custom weld a resonator for me.

[dizzydtrain]

Originally Posted by stang9779 I have a new cs cbe with a cnt downpipe and it is not loud. it's a little bit louder than stock but not too bad. maybe the second muffler has quieted down. Sent from my SCH-I510 using Tapatalk

It would be interesting to get another opinion on the new design--the changes could have contributed to a more mellow exhaust.

Haha, what kind of car did you have before the speed? If you were jumping ship from a straight piped v8 we might get a better idea of what is loud for you and what isnt.

[stang9779]

Originally Posted by f-castrillo Keep us posted on what CBE you end up swapping out for. I'm trying to avoid going deaf this winter lol Any further impressions? Do you have the catted or catless DP? For you, how was the jump in sound level from stock DP to CNT DP? And from CNT DP + CBE to CNT + CS? That looks like a good idea. Unfortunately, the CNT DP I have installed comes with a welded RP/TP section, so I probably need to go to a shop to have them custom weld a resonator for me.

I did it all at once. Its not loud to me. If you want stock sound then dont change cbe. My dp is catted.

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[wolly6973]

Originally Posted by dizzydtrain It would be interesting to get another opinion on the new design--the changes could have contributed to a more mellow exhaust. Haha, what kind of car did you have before the speed? If you were jumping ship from a straight piped v8 we might get a better idea of what is loud for you and what isnt.

This would be good to know. What is loud to some is not to others.
The CS felt like it made my ears bleed. Especially if he is trying to keep his woman happy, I would not recommend the CS.

[skeurton]

Originally Posted by wolly6973 This would be good to know. What is loud to some is not to others. The CS felt like it made my ears bleed. Especially if he is trying to keep his woman happy, I would not recommend the CS.

You never know... if he drives around at part throttle in the 3 to 3.5k RPM range, the vibration might make his woman VERY happy.

[skeurton]

Originally Posted by f-castrillo That looks like a good idea. Unfortunately, the CNT DP I have installed comes with a welded RP/TP section, so I probably need to go to a shop to have them custom weld a resonator for me.

Yeah, I specifically wanted to go with a DP/TP combo that was two separate pieces. Inspections here don't require a sniffer test, but they do put the car up on a lift and I've read that they sometimes check to see if the the cats are still there. This way, if I have to, putting the stock TP back in is a piece of cake.

[f-castrillo]

Originally Posted by skeurton Yeah, I specifically wanted to go with a DP/TP combo that was two separate pieces. Inspections here don't require a sniffer test, but they do put the car up on a lift and I've read that they sometimes check to see if the the cats are still there. This way, if I have to, putting the stock TP back in is a piece of cake.

Would have definitely gone for the UR DP/TP combo, had it not been for the price. The catted DP section alone costs more than the CNT full catted DP and RP sections combined.

[DONOTBUGME]

Originally Posted by Silver Ecstasy I've been going back and forth on this. I'm just going to email Magnaflow to get to the bottom of it.

You dont have to email them, I measured it. 2.5 outer diameter, and then it has a lip on the inside which makes it 2.25 inter diameter. Just do what I did and cut the shit off. Sounds stockish until you get on it and then it roars

[skeurton]

Just ordered the UR resonated test pipe. Went on a road trip this weekend and with the cruise control set at 70mph, the drone was pretty bad. Hopefully this helps.

[NOreasonY]

Hey guys, I dunno if i missed it in this thread (tell me if i did), are there any good vids of CS or UR without DP/TP setups?

Im interested in those two but from what im gathering the CS and UR are ultra loud with DP/TP, but are have a good volume with stock DP/TP

Again if i missed this stuff in here somewhere just let me know.

[Silver Ecstasy]

Originally Posted by donotbugme You dont have to email them, I measured it. 2.5 outer diameter, and then it has a lip on the inside which makes it 2.25 inter diameter. Just do what I did and cut the shit off. Sounds stockish until you get on it and then it roars

So I got this e-mail from Magnaflow:

From Magnaflow Hello The inlet pipe for Magnaflow kit 15557 will neck down to 2.5” in order to accurately be a direct bolt on to a factory catalytic converter. Because the factory converter is already 2.50” this will not create any loss in performance. Thank you for contacting Magnaflow.

@donotbugme Maybe you got a kit for the Mazda 3? Since that's 2.25"? Doubtful but just throwing it out there.

[jdhiatt]

@bigjimms6

Hey man,

I kind of wanted to pick your brain about your exhaust. I'm new to the MS3 community coming from the Tiburon community and I must say they are quite different in every aspect. I was going through the exhaust stick on the forum and heard your exhaust and really like that over the Cp-e or CS CBE. I read that yours was completely custom and if I read it right all you had done was a resonator delete/muffler delete and just straight pipe from the Cat up to just Tips at the rear bumper or did you replace the 2nd Cat with a Test Pipe? If you replaced with Test Pipe what did you have the shop do? Cut it out and weld in solid pipe or install one from like CS or Cobb/Cp-E?

I really appreciate the help. I only have a CS SRI/TIP and am looking to get my exhaust re-done. I'm avoiding the lucrative Fuel Pump replacement until I get my suspension/wheel setup done.

Thanks again

I hate not having a high post count....

[DONOTBUGME]

Originally Posted by Silver Ecstasy So I got this e-mail from Magnaflow: @donotbugme Maybe you got a kit for the Mazda 3? Since that's 2.25"? Doubtful but just throwing it out there.

I checked the part number when I got it here on their website. If I would have got a MZ3 kit then the rest of my piping all the way down would have been 2.5 not 3 which it is. http://www.magnaflow.com/02product/s...ayproducts.asp

Here is a pic i took, I couldnt get a strait angle on it without the flash or ambient light washing the tape measure out so i did not include it. But since seem to want to keep fighting me about it here it is. You will see the inner lip I am talking about, if you take the internal diameter of that it will be 2.25. Now without that inner lip it would be closer to 2.5.