| Author | Message | ||
     Indy_bueller |
I pulled the Dremel out yesterday and went to town on the inner airbox cover. I plan to follow this up with an outer airbox mod ala Hogs. Wow, I wasn't prepared for the noise! You can really hear that throttlebody sucking in the air! What do you guys think?    | ||
| Hogs |
If I was you I wd. just get rid of the whole unit except the top piece of course that fits down on top of the filter and throw a piece of Foam on top to hold it down, or leave as you have no real big difference anyways ,just IF you open up the cover as well then , with it all gone looks way Better! | ||
| Fullpower |
i guess you were not getting enough air???? | ||
| Fullpower |
has anyone used a manometer and actually measured the airbox pressure drop at wide open throttle? | ||
| Indy_bueller |
Nope. I'm hoping that this will rectify that situation though. Thanks for the input Hogs, I'm sure I'll end up doing that. | ||
| Fullpower |
my 5.9 liter cummins diesel breathes (quite well up to 3000 rpm) through a turbine inlet SMALLER than the buell xb frame snorkel passageway. gets sufficient air to make 250 horsepower. i know air flow = horsepower, but these are just little 74 inch engines here, the throttle body is less than 2 inches across. | ||
| Raymondt |
I see allot of this on the site, chopping of airboxes. I wory about riding in a downpour or just having to clean my filter more frequently but I also wanted to share that I took the mill to my V-Max air box and made it all pretty, but never could get enough gas to get rid of the lean spots so I started blocking it a little at a time with duct tape until it was just right. I suppose the FI on our XB's may compensate better than Jetting can, but so far the only facts I have seen have been more noise, sucking is cool, and some that have said a better throttle response with this mod. By the way I like the flat top mod too like for sale by kit at American Sportbike. I know you can modify but it is hard to back up. I had a tough time making a permanent recovery from the milling I did on the Max that looked good. I also want to say that I removed the whole air box from my Vulcan and put individual filters on each of the two carbs and it definately ran better with huge jets and spacers in there so it may just be an individual thing? Who Here Really Knows The Deal with the XB12? | ||
| Ejiii |
Take a look at the Hillbilly Motors F.A.S.T. intake kit. Independent reports indicate it works great and if you have an XB9SX it looks awesome thru the blue airbox cover. | ||
| Stoobr2 |
Like this....... HBM F.A.S.T intake kit (without) airbox cover  And with the airbox cover attached.  | ||
| Black_sunshine |
Indy....not gonna get maximum performance until you get rid of that stock air filter. Get the K&N for best results. | ||
| Signguyxb12 |
stoobr2, it would be the coolest if you could find a disco ball and put it over the K&N | ||
| Jerseyguy |
Home made from Lexan.  | ||
| Hywl_fawr |
Hi, Remember the post I put with velocity stack shapes from David Vizzard ? well his book also states that 'for Maximum power the air filter intake needs to be between 3-5 times the area of the throttle body area' I think if you work it out the Buell De-snorkled intake is about 2.5 times the area of the throttle area. So Cutting the inner lid would seem the way to go, having said that I 'swiss cheesed' mine and had a really bad 'Tak Tak Tak' noise at very low throttle positions in traffic etc. goes when you open her up, so I duct taped up the holes again. would this noise Go if I cut away the rest of the box away and just left the lid? | ||
| Stoobr2 |
Hi Signguy, An SX owner on ukbeg has installed a series of different colour LED's under his airbox cover, front shield and over the rear shock..... Each to their own, the overall effect looked quite good even though it was daytime when he showed me. | ||
| Stoobr2 |
Now this is a chopped-up airbox, my first attempt at a little more induction/power using the standard XB9 airbox lid & K&N air-filter.   Or maybe you can achieve something like this with a XB12 airbox lid and some basic tools. should be good for a couple of BHP and a chrisper throttle responce.....  Personally I still rate the HBM F.A.S.T intake kit, and outright winner of the badweb velocity-stack challenge. | ||
| Jedwele |
I am thinking of getting the open airbox kit, but since the airbox cover is not much bigger then the airbox itself wouldn't that negate most of the benefits? | ||
| Lucky |
ok i must be mentally challenged but i couldnt find the hbm fast intake system on the site. whats the cost? | ||
| Reepicheep |
There is an easier way... has worked great on my bike for 5k miles now. http://www.badweatherbikers.com/cgibin/discus/show.cgi?tpc=32777&post=337407#POST337407  Only change from that is I added the race filter (that one is stock) and looped another of those velcro straps around the center of the star. Another variation I have since added was that on the back (where the walls of the filter inner cover are taller) I put some holes in the sides and ran the velcro straps through instead of over. This locks things in place even better, though I have never seen any evidence of movement. (Message edited by reepicheep on June 15, 2005) | ||
| Phantom5oh |
"Take a look at the Hillbilly Motors F.A.S.T. intake kit. Independent reports indicate it works great and if you have an XB9SX it looks awesome thru the blue airbox cover." If I'm not mistaken, the F.A.S.T. system is no longer in production. Can anyone verify this? | ||
| Trojan |
Or this one?  | ||
| Wheelsleaning |
It's all physics yall. My reasoning on this issue it temp, not pressure. I'm in Louisiana (90+ degrees). Imagine where air goes before it gets in your engine. first thru the hot plastic "ram air", then the sun cooked frame tank, then into the engine cooked airbox. All this heat is killing HP.  When you open up the sides of the airbox you can help 2 things by this, but you also have to block off the snorkel: More cooling air will be going to the rear cylinder, and getting cooler air straight to the intake. Wow. I should be a Buell engineer  | ||
| Buellin_ri |
block off the snorkel: More cooling air will be going to the rear cylinder, and getting cooler air straight to the intake. thought of doing this. what did you use to block the hole in the frame/tank? | ||
| Thedevil |
Or this one  | ||
| Black_sunshine |
Interesting....looks like an alien brain. That would look awesome under the CityX! What are the two smaller filters for? | ||
| Thedevil |
the breathers | ||
| Kowpow225 |
OH NOOOOOOOOOOO!!!! AGAIN!?! | ||
| Blake808 |
thedevil - Were you able to retain the velocity stack under that filter? What happened to you gas tank breather? | ||
| Awprior |
Thedevil, I've got two questions, because I'm an engineer and have maybe had one to many beers to night to make my mind work right... The Devil Tube road test... What was done to the bike between the 'Devil Tube' and the 'Devil Pod (final) and opened up throttle body'? Huge difference there in performance. Also, what are the two graphs on the top of the dyno chart depicting? No units or titles are there.  Thanks dude. Alex | ||
| Admin |
Thedevil is not welcome here. As to that intake filter configuration... I sincerely doubt that it provides adequate sealing to prevent copious amounts of dirt laden air from entering the engine. It is another neat looking idea from this huckster that doesn't hold up under technical scrutiny. | ||
| Awprior |
Actually, Looked at the site a bit more... One is with just the 'Devil Pod Tube', the other with the 'Devil pod' or 'Devil Tube' or 'Airbox Tube'? It's sorta unclear... |
