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Old 12-21-2015, 11:59 PM   #1
Knighton2wheel
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Wink Need some opinions

Just took off the exhaust on my 250cc hyosung
so its pretty much straight piped now i guess
I dont know much about bikes so what might be the pros and cons for doing this? im gonna get a slip on exhaust or a "shorty" so I was just curious on how my 250 will sound without the exhaust.....so thats why i did it
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Old 12-22-2015, 12:14 AM   #2
MrSquirr3l
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to be straight to the point.

Pros: Maybe slight increase in power but really none if you are not tuned for it.

Cons: engines require a back pressure from the exhaust that in the long run can lead to engine failure if not set up properly.
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Old 12-22-2015, 07:08 AM   #3
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Um, engines hate back pressure. What they need is proper tuning for the change in exhaust velocity. If the exhaust flows the gasses out at a higher velocity, then the exhaust pulse will suck more air/fuel into the combustion chamber. If the fuel isn't adjusted, or tuned, you will pull in more air only and likely run lean, thus causing damage. It may also feel like you lost power, which is due to the bike no longer being tuned for the changes to the exhaust.

Back pressure would blow the exhaust gases back into the combustion chamber instead of evacuating it. Basically the opposite of what you want.
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Old 12-22-2015, 08:38 PM   #4
Knighton2wheel
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alright thanks I got a lot of research to do
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