Official Exhaust Photo & Sound Thread

[MM3Canuck]

Everyone seems to have a full exhaust system. rumble bumbel exhausts are nothing for me anymore. I am looking for a nice, clean, polished and bigger exhaust TIP for my Mazda3.

Anyone done this to his Mazda3? Any pics, or knows places where to get these. There are a few on ebay, but I don;t really like the tips that simply screw on, seems too cheap.

 

[WetsuitxNinja]

Everyone seems to have a full exhaust system. rumble bumbel exhausts are nothing for me anymore. I am looking for a nice, clean, polished and bigger exhaust TIP for my Mazda3.

Anyone done this to his Mazda3? Any pics, or knows places where to get these. There are a few on ebay, but I don;t really like the tips that simply screw on, seems too cheap.

I think any muffler shop will have just the tips you could have welded on. Probably cost ~30 bucks total as well.

They had some pretty decent looking exhaust tips at the exhaust place I went to when my buddy was getting his exhaust worked on.

 

[MM3Canuck]

Well, welding is not a problem to me. Just finding the right, nice tip!

I havent been shopping around too intensivly to be honest, thought you guys would know a good place of hand.

 

[WTF MATE]

I got to ask why are people running 2.5 inch exhaust on there 3s. It seems like a little too big imo, your going to lose a lot of horsepower that way, 2.25 or 2.36inch seems like it would yeild a bigger gain. Unless of course you have more extensive work done to your motor.

 

[WetsuitxNinja]

I got to ask why are people running 2.5 inch exhaust on there 3s. It seems like a little too big imo, your going to lose a lot of horsepower that way, 2.25 or 2.36inch seems like it would yeild a bigger gain. Unless of course you have more extensive work done to your motor.

2.5" catback gave someone on the other forums 3whp\8wtq. Done independantly from a forum member.
2.25" Magnaflow exhaust got 6whp\6wtq, taken from their site.

2.5 with a cat removed vs 2.5 with both cats
Draxas Base Kit 2.5 + Race Pipe 2.5 vs. Draxas Base kit dyno
@3.0k: +2hp, 3tq
@3.5k: +2hp, 3tq
@4.5k: +4hp, 5tq
@5.5k: +8hp, 8tq (!)
@6.0k: +7hp, 6tq (!)
@6.5k: +9hp, 8tq (thats 9.84hp!)

dynos had a gain over the stock exhaust from lower RPMs til redline.


List of Exhaust diameters.

Trubendz : http://trubendz.com (2.25, 2.5, 3.0 Magnaflow)
HKS: http://hks.com (2.55 HKS, 2nd Cat-Delete)
Draxas: http://draxas.com 2.5 (Thermal R&D)
http://www.draxas.com/images/Stock_vs_Base_vs_Race.gif
Borla: http://borla.com (2.5 Borla)
Racing Beat: http://racingbeat.com (2.375)
Corksport : http://corksport.com (2.4, 2nd Cat-Delete)
Vibrant: http://vibrantperformance.com (2.36, Vibrant)
http://www.vibrantperformance.com/news/img/mazda3_axle/dyno1small.pdf
Ark Performance: http://arkperformance.com (2.5)
Mazdaspeed: http://mazdaspeed.com (2.25)
Magnaflow: http://magnaflow.com (2.25 Magnaflow)
http://www.magnaflow.com/02product/dynos/15861.jpg
AutoExe: http://autoexe.com (2.0)

Info Compiled by Bean

 

[WTF MATE]

I'm thinking racing beat has it right with there 2.37 in. For the size of the motor, seems like a better choice imo. Anyone have a dyno results for an exhaust that size.

 

[WetsuitxNinja]

I'm thinking racing beat has it right with there 2.37 in. For the size of the motor, seems like a better choice imo. Anyone have a dyno results for an exhaust that size.

Kinda gay that on their site, they mention nothing of gains. They do say it looks better and sounds better than stock. (wtf)

I dont get how you can make a product, being a reputable company, and not having anything to show the gains from it. Seems like a big mistake on their part.

 

[bbrich57]

Perhaps they haven't dynoed anything yet? But for me, I would rather they say nothing than, "This bolt-on exhaust will give you UP TO 90% increase in horsepower and UP TO 65% in fuel mileage."
You may be right in that they should have number, but do you want the hyp, or do you want the reality?
It's easy to sell the hyp to most ppl, but I prefer the reality... for better or worse.

 

[WetsuitxNinja]

Yeah, anyone with commen sense would know that type of s*** dont work. Im not doubting RB has gains with the exhaust, but in R&D'ing something, you would assume you would come up with a base design, dyno, change diameter of the exhaust, dyno....

I mean s***, if you look at the exhausts there are 2.5 and 2.25" systems, did they just go lets put ours in the middle just because? Im sure they had a reason going with that size, why not put up a little jpg of the dyno.

I cant see RB not having a dyno of their exhaust, that would be foolish and honestly, retarded. I dunno about you, but I chose the exhaust that at the time had the highest gains, not on the sound it produces.

Im in no way doubting their product, but if it was my company, id try different size piping, to get the most hp out of it, then tune the sound with mufflers\resonators to produce the sound RB goes for.

 

[WTF MATE]

Wow Ok, my guess is since RB has been working with Mazda's for a minute they probablly did put some time and effort into making it and I'm sure if you wanted numbers they could give them to you. I don't think they were just trying to put there sizing somewhere in the middle just to get some better sound out of it, since that has very little to do with piping diameter. And 2.36/7 is actually a pretty common size exhaust for most 4cyl engines in the aftermarket. 2.5 in just seems like your losing way to much backpressure especially on a 2.3l

 

[voiceKoil]

Wow Ok, my guess is since RB has been working with Mazda's for a minute they probablly did put some time and effort into making it and I'm sure if you wanted numbers they could give them to you. I don't think they were just trying to put there sizing somewhere in the middle just to get some better sound out of it, since that has very little to do with piping diameter. And 2.36/7 is actually a pretty common size exhaust for most 4cyl engines in the aftermarket. 2.5 in just seems like your losing way to much backpressure especially on a 2.3l

Im so sick of the word backpressure, it honestly shouldnt exist, I know that a N/A 2.3 isnt pushing out a bunch of ponies but its not like people are putting a 3in on to actually start loosing velocity and in turn Hp, which probably wouldnt even fit. Its a common size anywhere between 2.25-2.5 because it really wouldnt make anything bigger than a minute difference.....All I know is according to Basic Exhaust Pipe Diameter Guidelines you dont want anything smaller than 2.25 if your producing 130 to 170hp because you want a sufficent amount of flow for the exhuast fumes to be dumped as fast as possible. Backpressure slows down the combustion process and having an outrageous exhaust would lose velocity. It seems to me that 2.37 is just a lucky number or had the best clearance or the largest amount of flow velocity from what the stock or aftermarket headers could put out. Odd number though.....

 

[bbrich57]

Im so sick of the word backpressure, it honestly shouldnt exist, I know that a N/A 2.3 isnt pushing out a bunch of ponies but its not like people are putting a 3in on to actually start loosing velocity and in turn Hp, which probably wouldnt even fit. Its a common size anywhere between 2.25-2.5 because it really wouldnt make anything bigger than a minute difference.....All I know is according to Basic Exhaust Pipe Diameter Guidelines you dont want anything smaller than 2.25 if your producing 130 to 170hp because you want a sufficent amount of flow for the exhuast fumes to be dumped as fast as possible. Backpressure slows down the combustion process and having an outrageous exhaust would lose velocity. It seems to me that 2.37 is just a lucky number or had the best clearance or the largest amount of flow velocity from what the stock or aftermarket headers could put out. Odd number though.....

Remember that velocity is also important, as are the secondary harmonics of the system vs. the engine.
Though it has been suggested to me that a lack of backpressure can be compensated for using modern day fuel mapping, I have found some to be necessary for street/daily driving. BP helps take advantage of the low-end torque an engine can produce, but reduces high-end power.
I've had lots of personal experience w/this in the old carburetor days using Stebro, Abarth and Monza aftermarket exhausts.
If you are planning to run @ 8000 RPM all day long, then by all means put a 3.5"-4" system on there w/a megaphone. But, if you're dealing w/city/highway traffic most of the time, I'd go with (and have) a smaller diameter system. Your fuel mileage is liable to be better too. This too is from my personal experience.
I believe the use, or lack of backpressure is alive and well and that it a necessary part of the equation.

 

[WTF MATE]

Remember that velocity is also important, as are the secondary harmonics of the system vs. the engine.
Though it has been suggested to me that a lack of backpressure can be compensated for using modern day fuel mapping, I have found some to be necessary for street/daily driving. BP helps take advantage of the low-end torque an engine can produce, but reduces high-end power.
I've had lots of personal experience w/this in the old carburetor days using Stebro, Abarth and Monza aftermarket exhausts.
If you are planning to run @ 8000 RPM all day long, then by all means put a 3.5"-4" system on there w/a megaphone. But, if you're dealing w/city/highway traffic most of the time, I'd go with (and have) a smaller diameter system. Your fuel mileage is liable to be better too. This too is from my personal experience.
I believe the use, or lack of backpressure is alive and well and that it a necessary part of the equation.

(mswerd) I was actually reading this article earier today on building your own headers and exhaust and how piping diameter and bends will effect your hp and tq in certain areas of the powerband, also about megaphones not tapering more than 10mm.

 

[utopia]

looked through this thread but does anyone have an audio/video/pics of the MazdaSpeed exhaust?

 

[bbrich57]

'K. This has been a long time in coming as only recently has DSL become available in my area.
Last AUGUST(!!) I installed the Vibrant exhaust. No header just the exhaust.
It's not too loud, though loud enough to draw the po-po's attention (no, I haven't been pulled over, just gotten looks,) and it has a nice low growl w/o being raspy. But up untril now I have been unable to upload the short sound/vid I did.
Here y'all go!

​

edit: Oh, and for those that may be wondering, yes I made sure I had full oil temp before doing the vid. I would never do this to a cold engine... 'less I wanted to blow it up.

 

[MightyMouse]

5Zigen now has an exhust for the 3. (Part # PRMA-012) They usually have really nice high end stuff. It is their Proracer A-Spec style. I can not find much info on this exhaust though. Anybody? How loud/quiet? Does it replace the second cat or not? Under 90 dB avg. according to 5Zigen??!??!?!?!??

PRORACER A SPEC:

The beauty of INCONEL with a hand-burnt tailend. Only certain companies can get ahold of this nickel mixture material, Inconel. As compared with Stainless tailends, when the Inconel substance is burnt, it leave a rainbow hue of colors that is rich. One glance will be able to tell the difference between our INCONEL tailend and others with a Stainless tailend.

SPECIFICATIONS:

MAIN PIPE: SUS409 (1.2MM) ALL STAINLESS STEEL

TAILEND: SUS304 WITH INCONEL 600

FEATURES: Pipe layout for overall performance gain with a pleasing pitch tone. Great for street use with a decibal reading averaging under 90dB. This series muffler is JASMA certified in Japan.

 

[Kansei]

With a muffler like that, I really doubt it'll be under 90db sadly. They do make nice stuff though

 

[MightyMouse]

With a muffler like that, I really doubt it'll be under 90db sadly. They do make nice stuff though

Not necessarily. I had a Tanabe exhaust on my old Integra that was extremely quiet, and still had good flow. The high end Japanese stuff tends to be much quieter than anything stateside.

When it comes to exhaust:

Cheap, quiet or good flow; pick two.

If I can find someone around here that sells it, I may just buy one to find out. Most of the A-Spec exhausts I have found run in the $700 range.

 

[cboney]

Custom exhaust video now available!

Here is the video of my custom exhaust, specs are:

Fujita F5 Cold Air Intake
Stock Header/Precat
Test Pipe (Replaces second cat)
Stock Resonator
Stock Catback Pipes
Magnaflow Stainless Muffler (5x7 Oval, Replaces stock muffler)
Stock Rear Pipes

http://www.youtube.com/watch?v=qkrnAQwmn30

(Just uploaded so it might take a minute to process on YouTube)

 

[Bufalo]

It seems to me that 2.37 is just a lucky number or had the best clearance or the largest amount of flow velocity from what the stock or aftermarket headers could put out. Odd number though.....

2.36" = 60mm, so it makes sense to all the foriegn companies.


Old post, but wanted to shed some light.