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 Post Posted: Sun Oct 09, 2011 11:47 am 
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Hornet Warrior

Joined: Fri Oct 15, 2010 4:25 am
Posts: 144
Location: pilipinas
hi guys,

bought an aftermarket bmc airfilter because my stockfilter is very2x dirty, i would have bough K&N but opted for bcm to try it out

BMC Air Filter 206/12 Performance

i think is a race filter and my hornet is stock, after change the pipe sounds leaner, when i accelerate from first gear its like its bogging down, when it gets past 4k rpm it runs fast and pickup is great.

will adjusting pilot jet makes it richer on low rpms? or does it affect high rpm's too?

or do i need bigger jets?


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 Post Posted: Sun Oct 09, 2011 12:11 pm 
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Joined: Sat Feb 20, 2010 1:13 pm
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Location: Kaohsiung, Taiwan
I have installed the same BMC filter. No real problems here. But I also noticed sometimes acceleration isn't quite smooth on full throttle from low revs. I plan to clean and sync the carbs soon. Hope this can resolve the slight problem.

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 Post Posted: Sun Oct 09, 2011 12:41 pm 
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Hornet Warrior

Joined: Fri Oct 15, 2010 4:25 am
Posts: 144
Location: pilipinas
well thats the first hting i noticed,stock oem filter is better on low rpm really, sounds and revs better, even on neutral when i rev it i feel theres too much air

bmc also on high gears and low rpm 4-5k ish rpm is sluggish

so i think its on low rpm's only, high rpm no problem, angry and fast

my bike was synched before i installed the bmc

do i need to oil it? because its not on the box


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 Post Posted: Sun Oct 09, 2011 1:20 pm 
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reiluke wrote:
...my bike was synched before i installed the bmc
do i need to oil it? because its not on the box

I'll let you know if re-syncing changes anything, as soon as I have done it.
AFAIK you only need to oil the BMC filter after you washed it... maybe every 20,000km.

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 Post Posted: Thu Oct 13, 2011 9:32 am 
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Hornet Warrior

Joined: Fri Oct 15, 2010 4:25 am
Posts: 144
Location: pilipinas
Borschtsch wrote:
reiluke wrote:
...my bike was synched before i installed the bmc
do i need to oil it? because its not on the box

I'll let you know if re-syncing changes anything, as soon as I have done it.
AFAIK you only need to oil the BMC filter after you washed it... maybe every 20,000km.


sup man, did you sync your bike yet? i did try to turn the pilot screws but cylinder 3 is very hard to reach

btw is that ur bike in your avatar? how much does that slash guard cost


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 Post Posted: Thu Oct 13, 2011 12:42 pm 
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Location: Kaohsiung, Taiwan
reiluke wrote:
sup man, did you sync your bike yet? i did try to turn the pilot screws but cylinder 3 is very hard to reach

No, havn't had time yet. Actually I wouldn't really try the syncing myself. I would bring the bike to my local trusted service shop.
Also, I havn't noticed that sluggish accelleration problem again recently. Might have been some bad fuel or something... maybe some moisture in the fuel line or carb?! Anyway, I'll bring the bike over to the shop soon. ... Very busy these days...

reiluke wrote:
btw is that ur bike in your avatar? how much does that slash guard cost

Yes, that's my bike. If I remember correctly the splash guard cost me NT$170 (US$5.50) at a local scooter shop. It's from a SYM "Fighter 150", probably a Taiwan-specific scooter model. I cut off some part at the top and fitted it to what was left of the original splash guard on my bike. I was tired of having a dirty backside everytime when there was some water or dirt on the road. This thing works very well and keeps the tail light clean as well. Doesn't look too bad either, or?! :o
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 Post Posted: Sat Oct 15, 2011 11:51 am 
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Hornet Lord

Joined: Mon Sep 06, 2010 9:54 am
Posts: 711
Location: Nez Zealand
you can also fit washers under the carb needles !
similar to this http://www.nighthawk750.com/mods/carbneedlemod.html


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 Post Posted: Sat Oct 15, 2011 1:21 pm 
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hayd3n wrote:
you can also fit washers under the carb needles !
similar to this http://www.nighthawk750.com/mods/carbneedlemod.html

Thanks for the cool link! I posted it in the DIY Guide section as well.

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 Post Posted: Sat May 26, 2012 11:46 am 
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This week I finally got the carbs cleaned and synchronised. Still using the same BMC air filter. It's still looking very clean. Now the engine is much more responsive and revs smoothly to the redline. So I guess it's best to get the carbs cleaned and tuned right after you change to any non-stock air filter.

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 Post Posted: Wed May 30, 2012 2:53 pm 
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Hornet Warrior

Joined: Fri Oct 15, 2010 4:25 am
Posts: 144
Location: pilipinas
i did carb and synchro'd but the mechanic still adjusted the airscrew from 2.5 to 2.0, now its all good


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 Post Posted: Thu May 31, 2012 12:51 am 
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Hornet Lord
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Joined: Wed Mar 21, 2012 7:46 pm
Posts: 681
Location: Manila, Philippines
I've lost $95 usd in a poker game, should have just tuned up the bike, like what you guys did...


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