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Old 01-16-2013, 07:34 PM   #1
kevolution
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No Exhaust

So, a somewhat noobish question.
I took the stock exhaust off my 2011 ninja250r to see how the two-brothers slip on would sound. And I love the sound of it without exhaust at all more.
Will running such a small cc engine harm the headers or warp the pipes if I run it with no exhaust? Is it illegal in Texas? (I can't see why it would be). Ive read a bunch of information for both sides of the fence.
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Old 01-16-2013, 07:53 PM   #2
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I know im going to get flamed for this. But I just want the information.
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Old 01-16-2013, 07:58 PM   #3
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Quote:
Originally Posted by kevolution View Post
So, a somewhat noobish question.
I took the stock exhaust off my 2011 ninja250r to see how the two-brothers slip on would sound. And I love the sound of it without exhaust at all more.
Will running such a small cc engine harm the headers or warp the pipes if I run it with no exhaust? Is it illegal in Texas? (I can't see why it would be). Ive read a bunch of information for both sides of the fence.
no it will not harm the headers or warp the pipes
















but it will make your bike run dangerously lean, making the motor run really hot, burning up exhaust valves and making your bike sound like
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Old 01-16-2013, 08:02 PM   #4
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take the headers and pipes off...go straight engine!
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Old 01-16-2013, 09:45 PM   #5
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Exhausts help tune the engine's response and can increase the power and smooth delivery. More noise doesn't equal more power or more rideability.
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Old 01-16-2013, 11:17 PM   #6
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User is banned

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Old 01-17-2013, 01:32 AM   #7
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It MAY not hurt your bike. It WILL affect your power. AND people with think you have a small . BUT your neighbors will ABSOLUTELY hate you and people won't want you to ride in front.
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Old 01-17-2013, 01:33 AM   #8
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You should totally do it.
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Old 01-17-2013, 01:42 AM   #9
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Yea, I'd say NO to leaving exhaust off!!



Ya see.. it's really just your imagination that it sounds good.

In no way does it sound good. And yes, it robs power. You don't have much on that bike, so again, don't do it. Put the aftermarket pipe on.

If you'd like, I'll gladly take if off your hands and take it to the tracks and beat the snot out of the bike, because it'll take the abuse of carrying my not-so-small around tracks, lap after lap after lap, and so on.
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Old 01-17-2013, 01:43 AM   #10
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never heard a 250 without an exhaust . cant be too loud right? lol
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Old 01-17-2013, 02:37 AM   #11
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If you can't make power just make noise instead. Your neighbor's will bring you cakes and pies, moreso if you leave super early or get home late.
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Old 01-17-2013, 07:36 AM   #12
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Quote:
Originally Posted by kevolution View Post
So, a somewhat noobish question.
I took the stock exhaust off my 2011 ninja250r to see how the two-brothers slip on would sound. And I love the sound of it without exhaust at all more.
Will running such a small cc engine harm the headers or warp the pipes if I run it with no exhaust? Is it illegal in Texas? (I can't see why it would be). Ive read a bunch of information for both sides of the fence.
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Old 01-17-2013, 07:38 AM   #13
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Quote:
Originally Posted by cychotic View Post
you can route the header to your windshield... it will be even better and louder... lol
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Old 01-17-2013, 07:46 AM   #14
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Put the exhaust back on...

If you want to be cool add some Akropovic stickers and stretch your bike.
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Old 01-17-2013, 07:48 AM   #15
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You can't see why having an obnoxiously loud bike would be illegal?
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Old 01-17-2013, 07:56 AM   #16
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update

So I just welded on straight pipes so in running straight pipes with one of those whistlers welded on. How much hp does this add?
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Old 01-17-2013, 07:56 AM   #17
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Quote:
Originally Posted by kevolution View Post
Is it illegal in Texas? (I can't see why it would be).
Occifer Holtzclaw would be able to advise you on the legality of such a modification...
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Old 01-17-2013, 07:58 AM   #18
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Lol
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Old 01-17-2013, 08:28 AM   #19
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Quote:
Originally Posted by kevolution View Post
So I just welded on straight pipes so in running straight pipes with one of those whistlers welded on. How much hp does this add?
Troll
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Old 01-17-2013, 08:37 AM   #20
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On a serious note, It can harm the engine valves if cold air is allowed to back flow through the exhaust after the engine is turned off. This is due to the different metals in the engine that expand and contract and different rates. This is also why you should always let your bike warm for a few mins before doing you burn out and wheelie when leaving your drive way.
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