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Author Topic: Quieter options for Exhaust  (Read 1059 times)

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Offline Psheff9

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Quieter options for Exhaust
« on: February 29, 2020, 03:53:01 pm »
I just bought a 2014 Bolt R-Spec thatís got just straight pipes on it and I lobe the way they sound, but itís just a hair too loud. What are the cheapest options in getting it a little quieter? Thanks!



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Online srinath

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Re: Quieter options for Exhaust
« Reply #1 on: February 29, 2020, 06:00:57 pm »
Enjoy it, I have something similar, so I do like them just fine YMMV.
Cool.
Srinath.

Online Sdaniels

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Re: Quieter options for Exhaust
« Reply #2 on: February 29, 2020, 06:07:39 pm »
Have you tried a drilled out stock exhaust?
2015 C-spec

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Offline Psheff9

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Re: Quieter options for Exhaust
« Reply #3 on: February 29, 2020, 06:09:37 pm »
Have you tried a drilled out stock exhaust?
No what is that? This is my first bike by the way haha!


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Online Sdaniels

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Re: Quieter options for Exhaust
« Reply #4 on: February 29, 2020, 06:30:25 pm »
It's the stock exhaust that's had about a 1 1/2" hole cut out of the internals of the baffling.  Makes a bit more noise than stock (which is quite tame) without the ear-splitting volume of some of the aftermarket systems.  Take a look around ebay, you might find a used exhaust for relatively cheap.  I'm actually about to remove mine & put on ebay...if you're interested.
2015 C-spec

Offline Psheff9

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Re: Quieter options for Exhaust
« Reply #5 on: February 29, 2020, 07:47:17 pm »
It's the stock exhaust that's had about a 1 1/2" hole cut out of the internals of the baffling.  Makes a bit more noise than stock (which is quite tame) without the ear-splitting volume of some of the aftermarket systems.  Take a look around ebay, you might find a used exhaust for relatively cheap.  I'm actually about to remove mine & put on ebay...if you're interested.
Yes Iím interested! Please let me know if/when you do it.


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Online Sdaniels

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Re: Quieter options for Exhaust
« Reply #6 on: February 29, 2020, 08:15:28 pm »
As soon as the new exhaust arrives I'll get back to you.  Supposed to be here the following Monday.
2015 C-spec

Online Sdaniels

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Re: Quieter options for Exhaust
« Reply #7 on: March 01, 2020, 06:13:06 am »
as requested, Psheff9...

2015 C-spec

Offline mittenfists

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Re: Quieter options for Exhaust
« Reply #8 on: March 17, 2020, 09:52:01 am »
My buddy put one of those on his Bolt...you have my sympathies.

Psheff9 - where are you located?

Offline Normalpro

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Re: Quieter options for Exhaust
« Reply #9 on: March 18, 2020, 12:00:10 am »
From surfing the web to make this a truly enlightening.

Offline tramp

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Re: Quieter options for Exhaust
« Reply #10 on: March 18, 2020, 07:37:37 am »
i just drilled numerous smaller holes around it
drive it like you stole it

Offline lunkhead

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Re: Quieter options for Exhaust
« Reply #11 on: March 18, 2020, 11:52:16 am »
Drilling around the outside won't bypass the most restrictive section where the gases must make a 90 degree turn to pass thru 66 small holes that have 25% less area than the tube. All the momentum of exhaust flow gets lost at that point. Drilling out the center is the way to go. I'll be replacing the cat and stock 1 3/4" tube/baffle with a 2" perforated stainless tube from Amazon. The O2 sensor bung will become the bottleneck but overall, it should still flow as good or better than some slip-ons, IMO.

C-SPƎC

Offline Irishjedi

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Re: Quieter options for Exhaust
« Reply #12 on: March 18, 2020, 12:19:43 pm »
I drilled mine out a couple years ago and couldn't be happier.  The sound is way better and it doesn't drive the neighbors crazy.  Took me about 3 minutes to do it.  Also, I saved a ton by not having to buy new pipes for the sound I was looking for.

Online srinath

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Re: Quieter options for Exhaust
« Reply #13 on: March 18, 2020, 02:31:13 pm »
I usually replace the stock can on everything I can, just the weight alone IMHO is worth it, and on this bike the carrier bracket is another heavy a$$ pig. Flow is secondary, the noise doesn't bother me and neighbors - well they are 2 cops, neither one cares, and to some extent I believe loud pipes save lives, it has saved me a few times.

Now, back in the early 00's they made a Ti can that went on the first gen returning ZX10 2006 or so that was lighter than anything in the aftermarket. Its flow sucked due to the scroll cat like the bolts can, but man was it feather light. Now that would have been one I'd replace for flow, but then again never had a ZX10 - it was going on a GS500, the flow may have been fine through that scroll, but someone had tried to remove it and ended up flattening the thing - so I had to remove it.

Cool.
Srinath.

Online Sdaniels

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Re: Quieter options for Exhaust
« Reply #14 on: March 18, 2020, 04:09:26 pm »
Amen to the weight savings on the stock exhaust removal...16 pounds & a few ounces, including the mounting bracket.  The DanMoto weighs a little over 5lb & I'm betting others are similar.  I dropped about 22 lb's with just the exhaust & rear fender.
2015 C-spec