Hole in the air box? - Motorcycle-Journal Forums

zukM50dude · 05-25-2007, 07:44 PM

Just curious to see if anyone has thought about drilling a hole in the stock air box to get more air to the air filter/ throttle body? I believe this would help the bike increase some power? what are your thoughts?

Sullyboo · 05-25-2007, 08:00 PM

If you do a search I think you'll find someone did something to modify the stock air box.

robertc729 · 05-25-2007, 08:09 PM

IIRC, there was a thread quite a few months back about modifying the stock airbox.

peter-reebok · 05-25-2007, 08:56 PM

yep,
have done that, and debaffled, and TFI fuel processor added.

NOt sure about extra power - only a dyno would tell you that.

I have cut a strip out of the underside of the air box cover about 15 mm wide, and 80 mm long (I guess).

It runs nicely, pulls from very low revs, and is not jerky on partial throttle like the stock setup.

Iceman99 · 05-26-2007, 02:25 PM

Cut some grooves in my C50 airbox with a K&N filter installed . The grooves look crooked in the pic , but they are perfectly str8

CrazyKid · 05-27-2007, 09:00 AM

I drilled a big 1" hole right in the front. It doesnt really make that much of a difference except on the highway doing 75mph. Seems to feel a little more "relaxed" at the higher speeds.

Ripped out my baffels and drilled the cats, no lean problems yet.

gar4mayor · 05-27-2007, 11:29 AM

Quote:

Originally Posted by CrazyKid

Ripped out my baffels and drilled the cats, no lean problems yet.

drilled the cats?

watcho talkin' about?

CrazyKid · 05-28-2007, 09:06 AM

when you take the big honker mufflers off at the 'H' like you would to de-baffle them, get a really long drill bit and a small crow bar or tire iron. Its a very weird metal/ceramic material that is very easy to drill through and hammer out with the crow bar.

Breeze · 05-28-2007, 05:44 PM

Here is my mod
http://www.motorcycle-journal.com/fo...tml#post240135

Trussmky · 06-22-2007, 10:01 PM

I too cut a hole in my airbox. It is 1in. diameter at the front end and 1/2in diameter at the back end, with a 3 in distance between centers. I put it on the bottom of the airbox, rather than the front to prevent water from entering the box.

Sorry about the dirty bike, I have been busy, and not able to wash it.

dj110965 · 06-24-2007, 08:26 PM

What did you use to cut the hole out with?

Ichabod · 06-24-2007, 09:14 PM

Quote:

Originally Posted by CrazyKid

when you take the big honker mufflers off at the 'H' like you would to de-baffle them, get a really long drill bit and a small crow bar or tire iron. Its a very weird metal/ceramic material that is very easy to drill through and hammer out with the crow bar.

Do you have any specific instructions on doing this? I have de-baffled the pipes at the rear but would be interested in this too.

Trussmky · 06-25-2007, 12:39 AM

Quote:

Originally Posted by dj110965

What did you use to cut the hole out with?

I drew it out on paper and taped it on to the airbox. I then used a Dremel with a high speed cutting bit, to rough out the round sections, a sanding but to smooth it out. I then used a fiberglass reinforced cutting wheel for the straight sections. I then trimmed off the melted bits with a razorblade.

shmedly · 06-25-2007, 08:25 AM

yeah but can anyone say with certainty that this signifcantly effects performance of the bike for the better?

I am waiting to do this until I see some convincing testimonials. So far people seem to be just speculating that it might make the bike run better.

What's the bottom line?

**intimid8er** · 06-25-2007, 08:37 AM

Quote:

Originally Posted by shmedly

yeah but can anyone say with certainty that this signifcantly effects performance of the bike for the better?

I am waiting to do this until I see some convincing testimonials. So far people seem to be just speculating that it might make the bike run better.

What's the bottom line?

More air = more power. It's just how engines are.

However, you must make sure you have a fuel solution when you do it. (Power Commander, Cobra, Techlusion)

Your gains will be good enough to futz with the stock airbox for free, rather than spending $300 for a trick looking air intake that will do the same thing.

shmedly · 06-25-2007, 05:16 PM

[quote=intimid8er;327266]However, you must make sure you have a fuel solution when you do it. (Power Commander, Cobra, Techlusion)[quote]

Thanks for that. I have no plan to get a fuel controller, so I think I'll leave the airbox alone.

shmedly · 06-25-2007, 05:17 PM

Quote:

Originally Posted by intimid8er

However, you must make sure you have a fuel solution when you do it. (Power Commander, Cobra, Techlusion

Thanks for that. I have no plan to get a fuel controller, so I think I'll leave the airbox alone.

**intimid8er** · 06-26-2007, 08:10 AM

Quote:

Originally Posted by shmedly

Thanks for that. I have no plan to get a fuel controller, so I think I'll leave the airbox alone.

You could always troll your local dealers to find a competent one that knows how to do a Yoshimura reflash for $75.00.

techgesture · 06-26-2007, 11:59 AM

I did it without a fuel processor and it runs great. I've purchased a Cobra fi2000r, but dont have it installed yet.... Im hoping that will make it even better.

shmedly · 06-26-2007, 11:26 PM

Quote:

Originally Posted by techgesture

I did it without a fuel processor and it runs great. I've purchased a Cobra fi2000r, but dont have it installed yet.... Im hoping that will make it even better.

Yes? Did you get more power by openign the air box up without any change to the fuel controller? Please describe.

05-25-2007, 07:44 PM	#1 (permalink)
zukM50dude Where Am I ? Joined: Sep 2005 Bike: 2006 Suzuki m50 Location: Baton Rouge Posts: 29	Hole in the air box? Just curious to see if anyone has thought about drilling a hole in the stock air box to get more air to the air filter/ throttle body? I believe this would help the bike increase some power? what are your thoughts?

05-26-2007, 02:25 PM	#5 (permalink)
Iceman99 Wants Better Weather Joined: Oct 2005 Bike: '05' M50 Black Location: Valencia , Ca. Posts: 660	Cut some grooves in my C50 airbox with a K&N filter installed . The grooves look crooked in the pic , but they are perfectly str8 __________________ Jardine 2:2 Taper Exhaust,C50 Air Box with K&N filter, Cobra EFI Fi2000, 32" Drag Bar, Custom Plate Mount,Custom made rear LED Blinkers, Foward control Kit, Kuryakyn pegs, grips and throttle boss, 3 inch lowering kit, Custom Pillion seat, De-badged and De-PAIRED, Pinstriped rims, Chromed drive shaft See my bike and accessories at www.CruiserCustomizing.com/iceman99

06-22-2007, 10:01 PM	#10 (permalink)
Trussmky Where Am I ? Joined: May 2006 Bike: Blue 05 M50 Location: Vegas Baby!!! Posts: 34	I too cut a hole in my airbox. It is 1in. diameter at the front end and 1/2in diameter at the back end, with a 3 in distance between centers. I put it on the bottom of the airbox, rather than the front to prevent water from entering the box. Sorry about the dirty bike, I have been busy, and not able to wash it. Attached Thumbnails __________________ "Life's journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting, holy #$%^...what a ride!"

06-24-2007, 08:26 PM	#11 (permalink)
dj110965 Ditch Magnet Joined: Aug 2006 Bike: Suzuki M109R Red Location: Arkansas Posts: 197	Trussmky What did you use to cut the hole out with? __________________ May the good Lord keep his hands on each and everyone of us!

06-25-2007, 08:25 AM	#14 (permalink)
shmedly In Training Joined: May 2007 Bike: HD Electra Glide Classic, Suzuki Boulevard M50 Location: In a box in Connecticut Posts: 121	yeah but can anyone say with certainty that this signifcantly effects performance of the bike for the better? I am waiting to do this until I see some convincing testimonials. So far people seem to be just speculating that it might make the bike run better. What's the bottom line? __________________ Loud pipes sound cool! 2003 HD Electra Glide Classic 100th Anniversary Edition

05-25-2007, 08:00 PM	#2 (permalink)
Sullyboo Clunked into first gear Joined: Jun 2006 Bike: M50 Location: NJ Posts: 223	If you do a search I think you'll find someone did something to modify the stock air box.

05-25-2007, 08:09 PM	#3 (permalink)
robertc729 Forensic Bug Splatter Analyst Joined: Mar 2006 Bike: 05 Boulevard C50 LE, 06 S40 (wife's bike) Location: Lexington, KY Posts: 4,087	IIRC, there was a thread quite a few months back about modifying the stock airbox.

05-25-2007, 08:56 PM	#4 (permalink)
peter-reebok Wants Better Weather Joined: Oct 2006 Bike: was Suzuki M50 - Now M109 Location: Melbourne Australia Posts: 672	yep, have done that, and debaffled, and TFI fuel processor added. NOt sure about extra power - only a dyno would tell you that. I have cut a strip out of the underside of the air box cover about 15 mm wide, and 80 mm long (I guess). It runs nicely, pulls from very low revs, and is not jerky on partial throttle like the stock setup.

05-27-2007, 09:00 AM	#6 (permalink)
CrazyKid Newbie Joined: May 2007 Bike: 06' M50 Location: Topeka Posts: 8	I drilled a big 1" hole right in the front. It doesnt really make that much of a difference except on the highway doing 75mph. Seems to feel a little more "relaxed" at the higher speeds. Ripped out my baffels and drilled the cats, no lean problems yet.

05-28-2007, 09:06 AM	#8 (permalink)
CrazyKid Newbie Joined: May 2007 Bike: 06' M50 Location: Topeka Posts: 8	when you take the big honker mufflers off at the 'H' like you would to de-baffle them, get a really long drill bit and a small crow bar or tire iron. Its a very weird metal/ceramic material that is very easy to drill through and hammer out with the crow bar.

05-28-2007, 05:44 PM	#9 (permalink)
Breeze Kickstand Operator Joined: Dec 2005 Bike: '05 Blue M50 w/Black Flames Location: Indian Trail, NC Posts: 278	Here is my mod http://www.motorcycle-journal.com/fo...tml#post240135

06-25-2007, 05:16 PM	#16 (permalink)
shmedly In Training Joined: May 2007 Bike: HD Electra Glide Classic, Suzuki Boulevard M50 Location: In a box in Connecticut Posts: 121	[quote=intimid8er;327266]However, you must make sure you have a fuel solution when you do it. (Power Commander, Cobra, Techlusion)[quote] Thanks for that. I have no plan to get a fuel controller, so I think I'll leave the airbox alone. __________________ Loud pipes sound cool! 2003 HD Electra Glide Classic 100th Anniversary Edition

06-26-2007, 11:59 AM	#19 (permalink)
techgesture Brought his own beer Joined: May 2006 Bike: '05 Black M50 Location: Charlotte, NC Posts: 830	I did it without a fuel processor and it runs great. I've purchased a Cobra fi2000r, but dont have it installed yet.... Im hoping that will make it even better.

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