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Old 11-27-2012, 11:03 PM   #1 (permalink)
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Default Need help finding a somewhat QUIET but powerful exhaust!

Just got my s1000rr about 3 and a half weeks ago and have put on about 1,400 miles so far.

I think that I am one of the few people that absolutely love the stock sound of this bike. Everyone who hears me riding tells me that it sounds like an Apache helicopter, and I don't disagree. It has a cultured confidence that I feel is lost with many aftermarket systems. I also like being able to fly through my local metro and not be heard for miles by police.

That being said, I am interested in adding a full exhaust system in order to increase power. I have read other threads and listened to youtube videos, but it's difficult to get a real feel for how the system sounds through those recordings.

Which system would you recommend to add the most power to the bike? That being said, would adding baffles help to maintain a similar sound as the stock bike? Is there any exhaust system that has the same effect as the stock system in terms of sound but adds substantially more power?

I've been looking at Leo Vince, Kyle Racing, Austin Racing, Brocks, etc.

PLEASE HELP!
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Old 11-28-2012, 01:57 AM   #2 (permalink)
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Can't help with aftermarket suggestions because like you, I love the stock exhaust. It's clean looking, I like that it's somewhat of a shorty pipe, and I like how it's relatively quiet around town and then screams like a demon hawk after 10k!

It amazes me when people say they want more power out of the s1k. Seriously, how much more can you actually use without stretching the swingarm? If you're down for that I'd say go buy russian's turbo kit and blast off into another dimension
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Old 11-28-2012, 03:09 AM   #3 (permalink)
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Long mufflers will be less loud hence the official Akra that compliments the HP ECU. With the supplied db killer I manage 93 db at sound check (lots of tracks in France have now a 95 limit) when switched in rain mode.


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Old 11-28-2012, 10:31 AM   #4 (permalink)
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Quote:
Originally Posted by HULK View Post
Can't help with aftermarket suggestions because like you, I love the stock exhaust. It's clean looking, I like that it's somewhat of a shorty pipe, and I like how it's relatively quiet around town and then screams like a demon hawk after 10k!

It amazes me when people say they want more power out of the s1k. Seriously, how much more can you actually use without stretching the swingarm? If you're down for that I'd say go buy russian's turbo kit and blast off into another dimension

I hear ya! It's just so tempting when an option is available to increase power so easily- if it there and I make use of it, I want to do it to the highest degree
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Old 11-28-2012, 10:47 AM   #5 (permalink)
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I also love my stock exhaust, it sounds, looks, feels great. Wouldn't trade it for anything.


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Old 11-28-2012, 12:53 PM   #6 (permalink)
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I was mainly looking to smooth out the midrange without making a lot of noise. Ended up with the full Akro long muffler system. It's a lot louder at idle of course, because the servo is gone, but at higher speed it is not a lot louder, even with the dB killer out. And it fixed the midrange quite nicely. Dan Kyle's system was one of my choices, but he told me personally that the Akro made 6 more horses than his midrange, his system was 3 or 4 more top end. All the dyno curves are on his website if you look around.

Last edited by skapan; 11-28-2012 at 12:56 PM.
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Old 11-28-2012, 04:19 PM   #7 (permalink)
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On a side note, what RPMs do you guys usually cruise at if not riding aggressively? I find myself between 4k-8k.

What is a healthy RPM range to downshift to?
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Old 11-28-2012, 04:57 PM   #8 (permalink)
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Quote:
Originally Posted by Rudehugh View Post
Which system would you recommend to add the most power to the bike? That being said, would adding baffles help to maintain a similar sound as the stock bike? Is there any exhaust system that has the same effect as the stock system in terms of sound but adds substantially more power?
As others say, I'm also amazed that anyone would feel that they would be able to use "substantially more power" than 180+ RWHP, but to each his own. One thing to keep in mind though - the electronics and fly-by-wire aspect of the bike won't even let it develop full stock power until you're going 140 mph+. This should provide some perspective on the need for more power.

Back to the question, without other mods any power increase with an exhaust change alone will likely be modest at best. Most systems that are simply bolted on will decrease power, some might add 5 hp or so if you get lucky. If you want "substantially more power" you're going to have to invest in a full system, a PCV, perhaps some custom fuel mapping, perhaps some intake mods, and some very good dyno tuning. Then you MIGHT get 10-15 extra. And it will be louder, probably a lot louder. The main benefit will be a reduction in weight.

Put simply, there is no aftermarket system you can bolt on which makes substantially more power and doesn't increase noise.

- Mark

Last edited by markjenn; 11-28-2012 at 05:00 PM.
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Old 11-28-2012, 05:43 PM   #9 (permalink)
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Quote:
Originally Posted by markjenn View Post
As others say, I'm also amazed that anyone would feel that they would be able to use "substantially more power" than 180+ RWHP, but to each his own. One thing to keep in mind though - the electronics and fly-by-wire aspect of the bike won't even let it develop full stock power until you're going 140 mph+. This should provide some perspective on the need for more power.

Back to the question, without other mods any power increase with an exhaust change alone will likely be modest at best. Most systems that are simply bolted on will decrease power, some might add 5 hp or so if you get lucky. If you want "substantially more power" you're going to have to invest in a full system, a PCV, perhaps some custom fuel mapping, perhaps some intake mods, and some very good dyno tuning. Then you MIGHT get 10-15 extra. And it will be louder, probably a lot louder. The main benefit will be a reduction in weight.

Put simply, there is no aftermarket system you can bolt on which makes substantially more power and doesn't increase noise.

- Mark
Thanks man, that puts a lot of things into perspective; probably not worth getting into on a student budget for an extra 10 hp on an already supreme machine.
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Old 11-28-2012, 09:41 PM   #10 (permalink)
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I'm looking for a quiet exhaust as well. However I want to loose all the weight that comes with having the stock exhaust. I do agree with trying to stay quiet as I do not need unwanted attention by the police or the annoyance of a very loud pipe.

The best solutions I found this far is the long akra or AR GP3 with an baffle.
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