Airbox Mods

[Pockets]

The side scoops don't direct air into the airbox though. They're only for cooling the cyliders. All of the air being sucked in comes through the front of the airbox and around the lower edges of it.

 

[upthemaiden]

It comes through the vent and around the edges on the newer bikes. on the older ones, like my 03 it came with a sealed airbox that got its air entirely from the left side scoop through the frame. if you use a solid 03 airbox you could try to pressurize it, but our xbs are better for 0-80mph, and ram air is really a bit better for higher speeds, for the amount that it actually affects performance anyway. It could be an ok project, I even have an extra frame snorkel if you want it. I still think youd be better off just keeping it open to let the airflow through.

 

[bttrfngrz]

yeah i have a sealed air box, and i race, so increased torque from a liberated air box wouldn't really benefit me. i imagine it would help my top end . i hardly go below 45 so 65- 120 is where i wanna quicken up. i'll keep you guys updated.

 

[Pockets]

120? On a stock Buell? Must be a 1203. My 9 won't do much better than 90.

 

[upthemaiden]

90?? That doesn't sound right. I have a 9, and it's no rocket at those speeds but it'll definitely go faster than 90. The wind usually slows me down well before the motor does.

 

[bttrfngrz]

yeah it's a nine how the hell do you not get past ninety? there is a fifth gear you know!

lol jk

 

[Pockets]

Yeah, nasty flattening out. I'll be working with theoctopus to correct my mapping once I have time.

 

[bttrfngrz]

yeah man i would get on that! thats a sizeable loss of power! what mods do you have?

 

[Pockets]

Just a homemade glasspack exhaust and breather re-route. Stock '09 airbox and filter.

 

[bttrfngrz]

fun stuff, good luck

 

[upthemaiden]

You should put your stock exhaust back on someday and see if it gets any better. The only mods to mine at the moment are the breather and a hawk exhaust, and an open airbox but I still have the stock filter and ecm. Sometimes I go back to the normal airbox but I don't notice any power difference, just use the open airbox when I have the transparent plastic. Gotta get the mapping worked out on mine but I haven't nailed down ecmspy quite yet. I thought I had heard that the XB9s would do about 138, but I've never tested it out.

 

[bobaganoosh]

theres no way thats right. when i bought mine it would do between 135 and 140 all stock exept a jardine. now with remap, k&n, open airbox it still does 135-140. its mainly all gearing

 

[Pockets]

My stock pipe was hacked for the belly pan tabs. There's nothing left of it after 3 tries at a DIY pipe LOL. Ah well. I just picked up a set of iridium NGK's so hopefully that will help too. -Sorry all for the threadjack... back to airbox mods!-

 

[iman501]

so i just read through all the posts on this thread, and I like the idea of the mod. a lot of what all of you are saying makes sense, yet my question is about the bike running lean (yea i know new question right?! haha jk)

it seems like some of you said that doing this mod with a after market pipe could make the bike run lean (or to lean). My bikes an 03 9R with a race ECM and buell race pipe. I have also done the breather reroute. will cutting holes in my air box, or just removing it and doing the "plexi-glass" approach like some of you have done make my bolt run to lean?

Also why do i have to disable my o2 censor, and how do i disable it?

 

[upthemaiden]

The race ecm should work perfectly find if you cut some holes in the airbox. The newer bikes come with holes in the airbox already.

As far as the 02 sensor, not sure why you need to disconnect it, but if you unbolt the bottom of the airbox from the frame you'll see a wire plugged into the bottom of it. Just unplug that cable.

 

[pamver]

who can tell mme what the diameter is of the carb so i can put a airfilter on it like this one

 

[JDT1127]

Just did the airbox delete and breather re-route last night FINALLY. Had the stuff laying around for months. Didn't really get to test out the power as I passed 3 cops on my short test ride (it was late). The sound was definitely LOUDER though. For me it is in a good way. Like a giant whooosh when you get on it. Only problem I'm having is at certain RPM I hear a sort of whistling sound. My guess is air trying to be sucked through the small gaps in between the bottom of the outer airbox and the frame. Anyone else have this problem? It's an 03 so it does not have the opening by the gas cap. Might custom make my own and see if that helps. So far I'm liking it though.

120? On a stock Buell? Must be a 1203. My 9 won't do much better than 90.

Something wrong there, my 9 has done 130 a few times (still had some left) and gets to 110 easily almost every day on my way to work. All I have is the race kit (K&N, ECM, and exhaust)

 

[DrogeN Omen]

i regularly do about 180 - 190km on the highway straits riding home... K&N air filter and modified twin tip exhaust. normal factory ecm.

 

[g3STRIKES]

my stock 03 firebolt wud pull 137 but that was tucked n flat and speedo reading soooo.....

 

[CityBoiX5020]

When I put in the K&N and airbox delete, will I need to do a tune or anything like that? What about just the K&N with the stock airbox?