919 Exhaust Fume Sickness? - Wrist Twisters
 
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post #1 of 34 Old 07-25-2011, 04:38 PM Thread Starter
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919 Exhaust Fume Sickness?

Hey all, I kind of have a weird topic/question/discussion.

Does anyone feel somewhat sick after a long ride and from smelling like exhaust fumes?

Everyone knows about the infamous 919 exhaust stink. You stop at stoplights and can get a good wiff of the exhaust smell, you start the bike up in the morning and can smell the strong exhaust smell, after riding, your clothes smell like exhaust. I've had my bike for a few weeks, and I've had a blast on it. But I've noticed that after riding for a little while and smelling like exhaust fumes, I tend to feel a little nauseous. I am not sure if it happens every time, but I've noticed more times than a few. I don't know if it's the scent of exhaust fumes that's making me feel this way, or am I in potential danger from riding the bike and inhaling the exhaust fumes? I think I start to feel this way after riding for a little while, and my sitting around in my clothes with the hint of the exhaust smell.

I was wondering if anyone else has experienced this...or if it's just me. Who knows, I could just a little under the weather for an extended amount of time.

I have a bone stock 2007.


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post #2 of 34 Old 07-25-2011, 04:48 PM
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Somebody get the hell in here and help before this guy stinks himself to deeth on one of these dang Hornits!

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post #3 of 34 Old 07-25-2011, 04:52 PM
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Once you put on your Delkevic's you will be better off. From what I can tell you are not really breathing in any more toxic gases with the 919 than other undertail equipped bikes. It's just more smelly.

I have never felt nauseous though. My office used to smell from my bag and gear. So much that some folks have asked if we could meet elsewhere! It's much better now. I think it's probably you reacting to the smell more than it being the effect of inhaling gases.

Are you running 87 octane?

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post #4 of 34 Old 07-25-2011, 04:57 PM
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I've read a few threads about exhaust issues. Everyone says running 87 octane helps and using a Power Commander helps as well.

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post #5 of 34 Old 07-25-2011, 05:01 PM
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It's not a sickness IT'S A DISEASE!!!

And none of us have found a cure for it yet, other than consume MORE OF IT, to curb the cravings.



Ok, really, run as low of octane as you can find in your area. Even go down to 85 if you can find it, just to see what kind of results you get.

Get a power commander and get it dyno'ed. This will hopefully lean it out a bit.

Move the exhaust lower, 900RR setup or something.

But I never had a problem even when I had an undertail exhaust.

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post #6 of 34 Old 07-25-2011, 05:04 PM
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I put a single sided exhaust on my bike and every once in a while I'll get a whiff of exhaust at a stop light. My jacket used to smell up the office, but now the smell is much less... or at least the pissing and moaning has stopped.



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post #7 of 34 Old 07-25-2011, 05:19 PM
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Some people can be very sensitive to whatever is in exhaust, It could be you are one of those people. I'll admit my 919 stinks and when it's real bad (like in the winter) I swear it makes me nauseous, but only if I'm standing next to it while it's idling. Once I get moving and get some fresh air in my face I feel better.

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post #8 of 34 Old 07-25-2011, 05:19 PM
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87 octane, Power Commander, aftermarket exhaust with turn-down tips (or better yet 900rr conversion), and also a Tailbag on the rear seat. All will help with the smell; as for getting nausea... no, I don't have that problem. The people riding behind me... that blows for them.

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post #9 of 34 Old 07-25-2011, 05:31 PM
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It's been a while since I converted to a low side exhaust (which alleviated the problem for me), but I do remember feeling a little queasy once in a while after riding. I even noticed that the smell was in the fabric inside my helmet.

I know the topic of stink has been beat to death, but I wonder if it could be linked to how cool the 919 engine seems to run, like maybe its always adding fuel to warm up. I changed my thermostat a year or so ago and the bike now runs maybe a couple of needle widths over the "C" mark instead of at or below it. It seems that I smell less stink especially after the bike is warmed up.

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post #10 of 34 Old 07-25-2011, 06:00 PM Thread Starter
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Thank you all for the suggestions. Yes, I am running 87 octane. There's one place that has 85 about an hour from me, I should try that out one day. The more I think of it, it may just be me being a whiner about it and making it a bigger deal than it really is. I know my VFR doesn't have this problem, probably because of the certain aerodynamics it has.

I think what I'll end up doing is putting on my tail bag and see if that disrupts the stench strength. If it does, who knows, maybe I'll install a permanent top box. 8-) But the Delkevics sound like something I really want to install, especially since it's an exhaust with the angled tips to help redirect the exhaust...well and because I really want them. And if the smell still really bothers me, I may end up doing a 900rr conversion...but I know that's much more expensive. I know that this 919 is an awesome motorcycle and I don't want to have to sell the bike just because riding it makes me feel sick LOL

Thank you for all the suggestions...I'm hoping the smell is something I get more accustomed to, so that it's no longer a foreign smell to me haha.

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post #11 of 34 Old 07-25-2011, 06:38 PM
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The 919 exhaust stink does not exist, it's merely a myth... like Bigfoot...

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post #12 of 34 Old 07-25-2011, 07:45 PM
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I'm pretty sure what's happening is what would be known as a Somatic reaction. In other words because you smell the exhaust you get nauseous. Really no different than if you smell someones vomit, or a babies diarrhea, a decade animal or stuff like that. Those things don't actually make you sick, you get sick because of what you think of the smell.

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post #13 of 34 Old 07-26-2011, 01:08 AM
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I too have had slight nausea and headaches after riding my 919. You may be experiancing mild carbon monoxide poisoning. Check wikipedia it shows all the symptoms of carbon monoxide poisoning. I dont think its in your head. Your body is probably just more sensitive to it than others.

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post #14 of 34 Old 07-26-2011, 10:38 AM Thread Starter
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If it continues, after a few weeks and after my new exhaust, I'll possibly try a 900rr conversion. If that still doesn't seem reasonable...worst case scenario, I'll have to trade the bike! Ahh!!

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post #15 of 34 Old 07-26-2011, 01:04 PM
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There's also another thread on type of fuel people are using, but what may also help you out is the talk on additives. Specifically cleaners (techron, seafoam, etc) and another one that interests me that I'll be trying is an ethanol stabilizer called Star Tron. Hopefully it does what it says, the ethanol in gas produces A LOT of stink. When Rickard919 came down from Canada, he noticed a huge increase in exhaust stink with our E-10 gas. Ethanol is in almost ALL gas stations WA state now, probably in yours too.

Here's the thread:
https://www.wristtwisters.com/forums/...tml#post459084

And here's a vid on the Star Tron additive (not affiliated with them in any way)

http://www.youtube.com/watch?v=CGRP_aLaJ-k

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post #16 of 34 Old 08-01-2011, 12:09 AM Thread Starter
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Wow thank you very much Andrew...I may try different fuel cleaners to see if it gets rid of the stink for that tank. Would be pretty badass if it did.

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post #17 of 34 Old 08-01-2011, 04:17 AM
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Sickness? You fishing for a lawsuit? You're not one of those guys who has a supply of stiff neck collars in his car, right?

My 919 exhaust has a funny effect on me too - it usually makes me want to ride more. Guinness does the same thing. In all seriousness, changing to Leo Vince slip-ons changed the smell a bit. I still notice it but not as much. Maybe I'm just used to it.

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post #18 of 34 Old 08-01-2011, 06:01 AM
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When I first got the bike (new) it made my wife sick when she was on the back. After a couple hundred miles it started to lighten up. Now I hardly notice it with 10K on the clock. Stick with the low octane fuel, mine really stinks if I use 91 - 93.

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post #19 of 34 Old 08-01-2011, 06:38 AM
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My bike did not stink at all for 9 months, then I took it in for a pre-roadtrip checkup at Honda and now it does (I have no idea why, they said they did nothing but spotcheck, adjust and lube). It does not make me sick though, and I usually don't pay attention to it. Good quality regular gas seems to mitigate it.

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post #20 of 34 Old 08-01-2011, 09:42 AM Thread Starter
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Quote:
Originally Posted by mambomonster View Post
Sickness? You fishing for a lawsuit? You're not one of those guys who has a supply of stiff neck collars in his car, right?
Hahaha...nahh...I guess I just wasn't used to the smell. After riding some more, I'm starting to somewhat get used to the smell. Actually, I've found a slight remedy as well. If I use my tail bag, it either absorbs some of the smell, or redirects the stink so that it's not completely on me. Which is sweet! I've got a set of Delkevics coming in the mail as well, can't wait to install those puppies...apparently the downward open end gets rid of a little bit of the smell also.

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post #21 of 34 Old 05-05-2014, 06:05 AM
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Bloody stupid design fail from Honda. Spoils an otherwise cracking bike. I am reluctant to pillion my wife as her clothes stink afterwards. Unfortunately down under in Aus our lowest octane is 91. Have I missed something, doesn't high octane burn better, a better bang?

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post #22 of 34 Old 05-05-2014, 08:39 AM
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I don't notice the stink when I ride mine but have only taken it on a few rides since getting it.

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post #23 of 34 Old 05-05-2014, 10:50 AM
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Quote:
Originally Posted by Maloney67 View Post
Bloody stupid design fail from Honda. Spoils an otherwise cracking bike. I am reluctant to pillion my wife as her clothes stink afterwards. Unfortunately down under in Aus our lowest octane is 91. Have I missed something, doesn't high octane burn better, a better bang?
Actually, higher octane is more resistant to combustion... The reason high performance engines require the higher octane is becuase it prevents detonation (uncontrolled combustion) which is more of a problem in high compression engines. This is why running 87 in the 9'er normally can reduce the stink becuase it results in a more complete combustion. The only benefit you'll get with 91 is if you can get it ethanol free, but it made the stink so much worse for me it wasn't worth it.

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post #24 of 34 Old 05-05-2014, 12:22 PM
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Quote:
Originally Posted by Maloney67 View Post
Bloody stupid design fail from Honda. Spoils an otherwise cracking bike. I am reluctant to pillion my wife as her clothes stink afterwards. Unfortunately down under in Aus our lowest octane is 91. Have I missed something, doesn't high octane burn better, a better bang?
Your Octane rating is "RON" based. In North America, we get RON+MON/2

Octane rating - Wikipedia, the free encyclopedia

This means your 91 rating is in fact the same 87 octane we have in North America

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post #25 of 34 Old 05-05-2014, 12:49 PM
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Maloney, switch to a 900rr exhauast (lower) setups. It moves the exhaust low enough it won't bother your pillion rider.

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post #26 of 34 Old 05-05-2014, 01:57 PM
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I haven't followed this topic in quite some time. Has anyone ever figured out why some 919s get the stink and some don't?

I've owned two 919s - stock, and with various mods - aftermarket exhaust, PC III, PAIRS block-off, etc., and have never noticed the stink.

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post #27 of 34 Old 05-05-2014, 03:00 PM
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Quote:
Originally Posted by mdtoney View Post
I haven't followed this topic in quite some time. Has anyone ever figured out why some 919s get the stink and some don't?

I've owned two 919s - stock, and with various mods - aftermarket exhaust, PC III, PAIRS block-off, etc., and have never noticed the stink.

How to get rid of 919 Exhaust stink


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post #28 of 34 Old 05-05-2014, 03:56 PM
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post #29 of 34 Old 05-05-2014, 04:02 PM
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It all depends on the riders ambient stink level. If you already stink, you won't notice it that much.

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post #30 of 34 Old 05-06-2014, 03:49 AM
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I had the same issue due to excessive noise from the rear pillion seat. Something about smelly hair. Modified mine to a low mount, helped with the turbulence hitting the pillion/gear. I'll see if I can post a pic. Mind you I don't know what fuel you guys in the states are running, we're on 91 octane (unleaded) 95 (premium or with ethanol) and so on. But lead fuel or benzene is no good for you either way, and if you're sitting in a lot of traffic on the way to work the smell will soak into whatever you're wearing anyway.
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post #31 of 34 Old 05-06-2014, 04:07 AM
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post #32 of 34 Old 05-06-2014, 07:42 AM
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I've had a couple of long rides where afterwards my stomach was upset and I just crashed after getting home, then the next day felt like shit. In both cases I had also gotten a good dose of sun on my melon, to the point of minor sunburn, so I am sure it was more the sunburn than the Hornet stink but once I finish off a few other projects I'm definitely going to be swapping to a side exhaust system.

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post #33 of 34 Old 05-07-2014, 09:59 PM
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Quote:
Originally Posted by newhornetowner View Post
I had the same issue due to excessive noise from the rear pillion seat. Something about smelly hair. Modified mine to a low mount, helped with the turbulence hitting the pillion/gear. I'll see if I can post a pic. Mind you I don't know what fuel you guys in the states are running, we're on 91 octane (unleaded) 95 (premium or with ethanol) and so on. But lead fuel or benzene is no good for you either way, and if you're sitting in a lot of traffic on the way to work the smell will soak into whatever you're wearing anyway.
Hey Newhornetowner, so the low pipe cured the exhaust fumes? I'm in Bunbury, WA and my 07 stinks. Haven't tried low Octane though. My thoughts are it's too rich and needs high octane or mapping. Prepared to change pipe and map. If that doesn't work I will flick the bike before I get too attached.

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post #34 of 34 Old 05-07-2014, 10:10 PM
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High octane will make it worse. Take our word for it, this topic has been hammered to death, brought back to life, choked, killed, and buried.

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