Exhaust system

[Only4TheWeak]

Hi sorry for being a noob..just want to ask what are the pros and cons fo changing your stock exhaust of your bike to an aftermarket one?..legal ones of course.. Does it improve the handling, speed or performance in anyway?

[Only4TheWeak]

Anyone? =)

[ericpingru]

wat bike u riding?

[Only4TheWeak]

wat bike u riding?

 

A small bike fz150i.. Just want to know the benefits/cons of changing exhaust..cos see many bikers changing exhaust systems..and also many bike shops selling.. Is it for cosmetic reasons etc etc?

[IvikaRazI]

Can read on this

 

http://en.wikipedia.org/wiki/Aftermarket_exhaust_parts

[DeusExMachina]

A small bike fz150i.. Just want to know the benefits/cons of changing exhaust..cos see many bikers changing exhaust systems..and also many bike shops selling.. Is it for cosmetic reasons etc etc?

 

For sound, for power, for cosmetics, for swee-dom.

 

But really, a less restrictive exhaust is generally better for the engine. To put it in layman's term, try stuffing a banana up your ass and then try to fart.... then take that banana out. See which one feels better.

[iewnuj]

It doesnt improve handling. There will be probably be a performance gain if the aftermarket exhaust is not a slip on. The amount of improvements varies, some people recommend to perform carb tuning to go along with your aftermarket exhaust

[driftbaker]

just wanna share a bit of the technical aspect of changing pipes.

 

what happens inside the engine, or cylinder, is really the simple process of combustion - take in air, add fuel, compress, combust, release the waste air. this waste air will then be passed through your headers to your endcan, to be exhausted. then the engine takes in fresh air again and the cycle repeats. what we really want is to fully take out all the waste air in the cylinder so that as much fresh air can be taken in. aftermarket endcan helps in this. now comes the technical portion.

 

inside the cylinder is a high pressure region. we know matter moves from high pressure (HP) to low pressure (LP). at the endcan, it is generally more LP than in the cylinder. what really happens in the endcan is, it has a series of buffer plates to create a LP region, such that more waste air travels to the endcan. in this way, more fresh air can be taken in for a stronger and more efficient combustion.

 

of course, with an aftermarket endcan, the bike needs to be retuned because the air/fuel ratio entering the combustion chamber will be significantly affected. similarly, if the header and midpipe is changed to aftermarket ones, the purpose is the same and additional tuning is required.

 

just my 2cents, hope i shared the correct knowledge.

[Only4TheWeak]

just wanna share a bit of the technical aspect of changing pipes.

 

what happens inside the engine, or cylinder, is really the simple process of combustion - take in air, add fuel, compress, combust, release the waste air. this waste air will then be passed through your headers to your endcan, to be exhausted. then the engine takes in fresh air again and the cycle repeats. what we really want is to fully take out all the waste air in the cylinder so that as much fresh air can be taken in. aftermarket endcan helps in this. now comes the technical portion.

 

inside the cylinder is a high pressure region. we know matter moves from high pressure (HP) to low pressure (LP). at the endcan, it is generally more LP than in the cylinder. what really happens in the endcan is, it has a series of buffer plates to create a LP region, such that more waste air travels to the endcan. in this way, more fresh air can be taken in for a stronger and more efficient combustion.

 

of course, with an aftermarket endcan, the bike needs to be retuned because the air/fuel ratio entering the combustion chamber will be significantly affected. similarly, if the header and midpipe is changed to aftermarket ones, the purpose is the same and additional tuning is required.

 

just my 2cents, hope i shared the correct knowledge.

 

Thanks bro for the ultra detailed explaination =).. So in a sense different brands of aftermarket endcan have different LP properties i guess..thus resulting in varying sounds and perfomances. Gr8ly appreciate the info.

[driftbaker]

i guess so. but it's more of different engineering designs between the brands. thanks for appreciating!

[SpeedKiller]

Hi sorry for being a noob..just want to ask what are the pros and cons fo changing your stock exhaust of your bike to an aftermarket one?..legal ones of course.. Does it improve the handling, speed or performance in anyway?

 

Changed slip ons for my 600cc before riding 1k bike. However, felt that newer bikes don't really felt great difference in the power. With silencer out feels lighter and more responsive but at the expense of TP watching you out there.

 

I felt is more of comestic looks and sounds. But sometimes I ask myself is there really a need to just add that 1-2% HP on my bike?

 

Now for my litre bike I focus more on performance, comfort and smooth riding more that outlook.

 

Just my opinions. Pardon for those who changed to aftermarket exhaust.

[caveb]

well bro, you need to compare datas on what is the difference between your stock exhaust and your aftermarket one. For example, i just got my hayabusa and i change the stock exhaust to the akrapovic carbon one. Firstly stock weight 14kg, but akra carbon weight 4+ kg, so save some weight off the bike. Power can't feel so much but cosmetic definitely. Just my 2 cents worth.

[Only4TheWeak]

well bro, you need to compare datas on what is the difference between your stock exhaust and your aftermarket one. For example, i just got my hayabusa and i change the stock exhaust to the akrapovic carbon one. Firstly stock weight 14kg, but akra carbon weight 4+ kg, so save some weight off the bike. Power can't feel so much but cosmetic definitely. Just my 2 cents worth.

 

Roger. Thanks heaps for the input. At least I know now that some exhaust systems are way lighter in weight than stock ones. =)

[caveb]

Roger. Thanks heaps for the input. At least I know now that some exhaust systems are way lighter in weight than stock ones. =)

oh, and also carbon fiber exhaust is not as hot compared to titanium/stainless stain one.