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Tech: The Great Honda Jazz Exhaust Thread

  #1  
Old 07-26-2005, 05:36 PM
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Tech: The Great Honda Jazz Exhaust Thread

This thread is Work In Progress! If you feel information is missing, or have anything to contribute with, please PM me!

Prologue

The purpose of this thread is to gather information related to the Honda Jazz exhaust system. I will try to find all relevant information, links, pictures, reviews and articles related to aftermarket exhaust systems for the Jazz today.

Introduction

In brief terms, the exhaust system on the Jazz consist of a 4-1 header, a catalytic converter, a B-pipe (midsection pipe), and an axleback (muffler). The entire exhaust system on the Jazz, even including the intake, is resonated from the header to the muffler. The resonation helps moving the air from the engine, thru the pipes and out the muffler. Resonation is what keeps the high exhaust output on the small Honda engines, and this is crucial to performance. If you’d like to read more about resonation – see what Wiki has to say about it Here!.

The Header utilizes a 4-2-1 (Tho most would claim it’s a 4-1) design. The Jazz Vti gets a stainless steel header. A picture of the header for the Vti may be found here! Please note that the header collector going into the Cat, requires a donut gasket.

The Cat is directly mounted to the headers collector. To increase flow thru the Cat, Honda chose to mount intake to the Cat with an upward angle, thus giving larger surface area for the exhaust to enter the Cat. A picture of this design may be found Here!.

The B-Pipe carries the exhaust from the Cat to the Muffler. It’s a straight thru pipe, originally 48mm from Honda, with a resonator in the middle. The resonator lowers and smoothens the sound – as well a increasing the exhaust flow thru the mid-section. A picture of the Spoon version of the B-pipe may be found Here!

The Muffler / Axleback is mostly about sound dampening. The design of the muffler, its volume and shape – makes the sound silent, loud, deep, raspy – all depending on application. (Picture coming)


A few nice-to-knows about Jazz Exhaust:

- The stock exhaust diameter for the B-pipe is 48mm OD (Outer Diameter). This is more then enough for a light tuned Naturally Aspirated 1.4/1.5 litre engine.
- Too large exhaust piping (60mm pluss) will in most cases decrease performance, simply because the exhaust uses more time to leave the engine.
- A non-resonated exhaust system will decrease performance on a N/A’ed Jazz.
- 90 percent of power-output from an exhaust system is from the design of the header and the Cat / Testpipe.
- The design of the primary and secondary runners of the Header decides where the power increase within the power band of the engine is located. Some Headers may give a larger midrange (second 1/3 of the RPM range), while some increase the top end (Last 1/3 of the RPM range) power output of the engine.

Aftermarket Exhaust Systems

Changing the exhaust system on the car is one of the most common modifications to do on ones car today. If done right, it may offer a small increase in horsepower, and a nicer (or ricer) sound to the car. An aftermarket exhaust is rarely considered to be a performance modification (on Jazz that is), but it may play a vital role in power output when other modifications are applied to the engine.


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Spoon Sports

Spoon Sports was amongst the first companies to provide aftermarket exhaust for the Jazz/Fit. Like always, their quality in exhaust is top notch, utilizing a stainless steel construction. In good Spoon style, the power is extracted from the higher RPM’s of the powerband. Their performance 4-1 header is very similar to the OEM Vti unit, but utilizes a larger piping, and somewhat larger primary runners.

Spoon also offers a B-pipe and their two normal mufflers for the Jazz. The B-pipe uses 53mm piping. The Spoon B-pipe is a one piece one, which makes shipping a little bit more expensive since the package will be somewhat bigger. As expected from Spoon – both the classic N1 muffler and the Street Type muffler are available for the Jazz.





Spoon Sports 4-2-1 Header – GD1/GD3 – Part number: 18100-GD3-000 – Retail: 745 AUD / 600 USD
Spoon Sports B-Pipe – GD1/GD3 – Part number: 18220-GDA-002 – Retail: 395 AUD / 320 USD
Spoon Sports Street Muffler (GD1/GD3) – Part Number: 18030-GDA-000 – Retail: 745 AUD / 600 USD
Spoon Sports N1 Mufler (GD1/GD3) – Part Number: 18030-GDA-011 – Retail: 425 AUD / 345 USD

Please note that these are Spoon Sports retail prices. For exact pricing, contact your local dealer!

Spoon Sports N1 Silencer:



Spoon Sports Street Type Silencer



More pics here, here, here, and last one here

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Trust & Greddy

Trust offers a variety of exhaust systems for the Honda Jazz – from the cheap simple systems – to the more refined and expensive ones. I will list the various systems and a brief description here. All systems are made from Stainless Steel with the only exception of Titanium – which is more durable and lighter then Steel.


MX Muffler



The MX muffler is a bolt-on replacement muffler for the stock unit, in 50mm piping. It offers a nice and quiet sound not too unlike the stock sound.

For GD1 – Part number 10151560 – Retail 360 AUD / 290 USD


Power Muffler



Much like the MX muffler – the Power Muffler is an axleback system. This system is much louder, and offers the well-known N1 design.

For GD1 – Part Number 10153080 – Retail 410 AUD / 325 USD


Beat MAX Ti



The Beat MAX offers a light and strong Titanium muffler with an anodized tip. This muffler also features the N1 design.

For GD1 and GD3 – Part Number 10154130 – Retail 410 AUD / 325 USD

* The regular Beat MAX system is a complete catback system, and will be released late 05.


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XForce

X-Force is a fairly new brand to the Honda scene, but has rapidly built up a good reputation. The quality and crafting of their exhaust systems is good, and the use of Stainless Steel is a well-known winner. Little is known about the performance aspects of the X-force exhaust for the Jazz. The X-Force factory can confirm that the system has been di-resonated for the L-series engines – which means that the sound and power is maintained. The silencer features the wellknown N1 style tip, which also helps to provide a deep sound to the exhaust.

This exhaust system is very decent priced. You can get the entire system from Australia for 990 AUD / 650 USD. This includes the header, cat, B-pipe and axleback.





More pics here , here and here



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Please Note: This is Work In Progress. I will continue to write on this as time allows for it, and I will need your help to make it as comprehensive as possible.

A list of things I need to expand it (Feedback in PM please):

High quality pictures of the stock exhaust system of the Jazz, for GD1 and GD3 – both mounted and off the car. Diagrams, measurements and tech stuff related to the systems.

Links to producers of aftermarket Jazz systems, pictures of the systems both on an off the car, links to reviews and such is greatly appreciated.

Thanks for all you help!
 
  #2  
Old 07-27-2005, 11:51 AM
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How about this one from J's Racing?



http://www.jsracing.co.jp/pages/fit/titan_j.html

Does an aftermarket on the Fit make it sound like a fart can equipped Civic? Any audio/video clips?
 
  #3  
Old 07-27-2005, 01:58 PM
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I have been looking a bit on the Js unit, and yes, it seems promising. The price however, is outrageous. Its made from Titanium tho - so I guess its worth it.

As to the sound the answer is "No, Not Really...". Even with a small displacement engine, using the proper grade of resonating, you can get the sound you want. Deep and Dark, which I like the best, or High-pitched and Raspy - like 14 year old ricers like the best. To each his own I guess.

In brief terms - Way of Resonation decides sound and performance.
 
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Old 07-27-2005, 02:10 PM
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I wonder if there's any resonator or muffler upgrade that can give the Jazz/Fit a deeper BMW 5 series-like sound. As it is, the stock pipings give it a hollow sound on idling, characteristic of stainless steel piping equipped 3-series. I like it right now, just wondering if there's something out there that can give it some depth.
 
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Old 07-27-2005, 02:17 PM
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http://www.fujitsubo.co.jp/mc-prod/

Fujitsubo exhausts on 4 cylinder cars have the type of sound you are looking for. I dont think they make an exhaust yet for the FIT/JAZZ?
 
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Old 07-27-2005, 02:46 PM
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Originally Posted by Mojo
http://www.fujitsubo.co.jp/mc-prod/

Fujitsubo exhausts on 4 cylinder cars have the type of sound you are looking for. I dont think they make an exhaust yet for the FIT/JAZZ?
Really? Cool... I prefer a deep hum on idling. I don't like noisy mufflers/exhausts on WOT. Had my fair share of that already. And I would also prefer a muffler that doesn't jot out the rear, something that just goes under the bumper inconspicuously. Too much to ask? Hehehe
 
  #7  
Old 07-27-2005, 03:48 PM
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Fujitsubo exhausts on 4 cylinder cars have the type of sound you are looking for.
Well, sorta true. Some of their many systems have that quality - like the RM01A system. Most N1 systems offer a loud, deep sound.
 
  #8  
Old 08-27-2005, 10:26 PM
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I am also looking for a 3 series typical tone exhaust system. Has anyone tried Fujitsubo mentioned above? Thanks.
 
  #9  
Old 09-08-2005, 11:17 AM
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Originally Posted by mav
How about this one from J's Racing?



http://www.jsracing.co.jp/pages/fit/titan_j.html

Does an aftermarket on the Fit make it sound like a fart can equipped Civic? Any audio/video clips?
are you really going to spend that much of money on this little car?? it will be cool though...
 
  #10  
Old 09-20-2005, 06:58 AM
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Any aftermarrket exhaust that sound close to stock. I'd like to create a sleeper.
 

Last edited by strepto; 10-25-2005 at 05:03 AM.
  #11  
Old 09-23-2005, 02:25 PM
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this car look like a sleeper already. you cannot make this car LOOOK fast
 
  #12  
Old 10-24-2005, 10:07 PM
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Vision R N1 ...


 
  #13  
Old 11-07-2005, 10:13 PM
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Cool Helpppppppppppppp

Somebody can help me

How to place or attached a photo in this email.
thank you
 
  #14  
Old 11-08-2005, 04:22 AM
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the tags for the image is [img]url of image[/ img] without the space between the [/ and img
 
  #15  
Old 11-18-2005, 04:20 PM
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anyone have pics of the Mugen twin exhaust?
 
  #16  
Old 11-19-2005, 06:23 PM
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You mean like this?



It looks like its just under $700 in Japan.
 
  #17  
Old 11-24-2005, 01:27 AM
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Anybody from Australia? where do you get things like this in Australia? Melbourne in particular ..

Thanks,

Ed
 
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Old 11-24-2005, 04:31 AM
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Originally Posted by edy_l
Anybody from Australia? where do you get things like this in Australia? Melbourne in particular ..

Thanks,

Ed
One of the dealers on ozhonda.com who handle Mugen, import direct from Mugen Japan or have a custom exhaust made up by an exhaust shop.

Some great exhaust systems are made in Australia. Companies like Walker and Staintune export all over the world.
 
  #19  
Old 11-24-2005, 06:58 PM
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thanks, vividjazz .. do u mean btrevolution?
hey .. just wondering is your car in the gallery?

Ed
 
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Old 11-25-2005, 06:02 AM
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Originally Posted by edy_l
thanks, vividjazz .. do u mean btrevolution?
hey .. just wondering is your car in the gallery?

Ed
Was thinking more along the line of JDM Concept but genuine Mugen is soooo expensive.

My car isn't in the gallery as it isn't anything flash from outside. I chose the VTi as didn't want 15kg+ of factory body kits or $$$$ in aftermarket kits. My wheels are factory 14" Honda Enki as I've learnt the hard way what happens to wheels on Sydney goat tracks (roads) - got a couple of sets of buckled 2 piece Racing Sparco's to show for it from a couple of cars ago. Just got short antenna, clear side indicators and whiter bulbs all round (BJ Union and Polarg).

Rather just have the nice sound system and bars to tighten up the handling.
 

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