Single VS Dual Exhaust System.

**markasia** · 19-02-2007 07:51 PM

Hey Guys....Getting A Custom Exhaust System As Soon As My Headers Arrive. Was Going To Get A Straight 2 Quater System With Full Catback, Should I Change It To A Single System For More Power Gain? Or It Wont Make Any Difference Having A Dual System?

Much Help Is Appreciated Thankyou!!

**Chris_F** · 19-02-2007 08:02 PM

if your searching for every last kw a single outlet exhaust is the better option (though slightly louder depending on the number of resonators etc.)

most tuner brands for the CL7/CL9 use 60mm piping so that's something to consider when your choosing piping diameter

what are your plans for the car?

**aaronng** · 19-02-2007 08:05 PM

They use single for more power because there are fewer bends compared to a dual muffler design.

**EuroAccord13** · 19-02-2007 08:10 PM

What headers are you getting?

A properly built dual system can deliver more power than a single outlet system that is done badly or using press bend. The Euro's dual system is more for emissions and looks than anything else.

If you are after pure power, take a single system. You will need from memory, four mandrel bends with two of them being 90 degree angles.

Here's a thread that deals with the exhaust system for the Euro...

http://www.ozhonda.com/forum/showthread.php?t=22763

**Chris_F** · 19-02-2007 08:15 PM

don't forget the weight saving factor as well... my exhaust saved me 15+kg over standard

**markasia** · 19-02-2007 09:20 PM

60mm piping...ill note that down and all other info u guys give me, so i know whats best to get when i go down to the work shop.

when i got my euro, it was just going to be a standard everidae car that stands out, thats why i got my coilovers and 20" rims, but now i decided to go to the performance option, and see what i can do to the euro.

Originally Posted by Chris_F

if your searching for every last kw a single outlet exhaust is the better option (though slightly louder depending on the number of resonators etc.)

most tuner brands for the CL7/CL9 use 60mm piping so that's something to consider when your choosing piping diameter

what are your plans for the car?

**markasia** · 19-02-2007 09:22 PM

Originally Posted by EuroAccord13

What headers are you getting?

A properly built dual system can deliver more power than a single outlet system that is done badly or using press bend. The Euro's dual system is more for emissions and looks than anything else.

If you are after pure power, take a single system. You will need from memory, four mandrel bends with two of them being 90 degree angles.

Here's a thread that deals with the exhaust system for the Euro...

http://www.ozhonda.com/forum/showthread.php?t=22763

Im Getting Comptech headers.

Thanks For The Link.

**markasia** · 19-02-2007 09:24 PM

So Far:

60 mm piping...

Four Mandrel Bends With Two Of THem Being 90 Degree Angles.

Weight Factor.

Is there anything else i need to look upon??

**Chris_F** · 19-02-2007 10:43 PM

going with a smaller diameter rim will help with performance aswell, 17" is best but 18" isn't too harmful either.

you should also probably consider how loud you want it to be? once you know that you can decide on the number of resonators you'll get made and the type of muffler.

if you want something quieter 2 resonators and an oval shape (i.e. non-cannon) muffler will probably work better

otherwise one resonator and a canon style muffler should be a good compromise.

the tough thing with a custom system is that there's no guarantee on sound quality/volume.. most pre-made exhausts seem to have a good balance between sound/performance.

**markasia** · 19-02-2007 11:23 PM

Originally Posted by Chris_F

going with a smaller diameter rim will help with performance aswell, 17" is best but 18" isn't too harmful either.

you should also probably consider how loud you want it to be? once you know that you can decide on the number of resonators you'll get made and the type of muffler.

if you want something quieter 2 resonators and an oval shape (i.e. non-cannon) muffler will probably work better

otherwise one resonator and a canon style muffler should be a good compromise.

the tough thing with a custom system is that there's no guarantee on sound quality/volume.. most pre-made exhausts seem to have a good balance between sound/performance.

Yeah I'm selling My 20" at the moment, and do have a set of 18" on my mind, its just a matter of selling the 20" first.

and about sound, like u said, theres no gurantee on sound on a custom one, but il probabli go with the one resonator and canon style muffler, wouldnt mind it being a bit loud...lol.

Roughly how much of a power gain is a exhaust system, i know every figure is different, but like a estermate would be great.

thankyou.

**EuroAccord13** · 20-02-2007 01:45 AM

Put it this way, if you have a bigger pipe size, the exhaust pulses will be wider vertically when it is travelling down the pipe, therefore, the you will need high RPM to extract it faster out of the system, the opposite is applied for smaller piping.

For the Euro, too large a pipe means it's useless because the Euro's engine doesn't rev high enough for it to be effective... 60-63mm is about right..