| Author | Message | ||
     Jlrenken |
has anyone tried this setup and if so how was it. I guess its the F.A.S.T Air Intake kit.  | ||
| Wolfo68 |
used to have great numbers (to my recollection), but I thought they stopped making it and they were hard to find. | ||
| Terrys1980 |
The kit did make good numbers, mostly due to the velocity stack but unfortunately like Wolfo said the kit is no longer being made. | ||
| Jlrenken |
know of anyone who might have a used one forsale or something. | ||
| Sticks |
It's not bolt on for post 03? bikes. | ||
| Terrys1980 |
Yes it is a bolt on kit for the '03+ XB bikes. HillBilly Motors made them but they weren't really mass produced and not many made it to the states. | ||
| Froggy |
Yea it is pretty rare, I've only seen one in all my years of Buelling. | ||
| Sticks |
Wasn't there a change to the throttle body itself after 03 or so? I'm not talking about about the rubber snorkel. In any event, I have a FAST intake and a 06 City and there is NO way that it would simply bolt on to my bike without either machining the throttle body or the FAST stack. Not compatible without some lovin' first with mine. ? | ||
| Alex |
There were two versions. One for early XB 9 models (with two piece throttle bodies keeping the stock rubber stack in place by two bolts on the side of the rubber stack) and the other for XB12 and later XB9 (with one piece throttle body keeping the stock rubber stack in place with a big clamp). | ||
| M1combat |
Why do I remember all velocity stacks proving to be complete and utter snake oil on an otherwise unmodified bike? I remember the days when we had like 4-5 on the market and no one could show proof that they were better than stock... Or am I crazy? | ||
| No_rice |
Why do I remember all velocity stacks proving to be complete and utter snake oil on an otherwise unmodified bike? I remember the days when we had like 4-5 on the market and no one could show proof that they were better than stock... Or am I crazy? thats what i thought i remembered. hillbilly makes great stuff, but i wasnt thinking any of those things did a great improvement. | ||
| Trojan |
Why do I remember all velocity stacks proving to be complete and utter snake oil on an otherwise unmodified bike? The velocity stack wasn't the part that made the big improvement on early bikes. It was the removal of the outer airbox on earlier XB9 models that would give an increase of 4-8bhp. Later models had improved airbox designs so the improvements were not as great, although there is still some benefit even on later bikes. | ||
| M1combat |
4-8??? With a metric crap ton of tuning and an exhaust system also yes? I know drilling/cutting/slicing/hack sawing holes in the early airboxes saw a bit more smooth throttle response and a "LITTLE" more power but 4-8? Anyway... So what you're saying is if you go from bone stock AB to a heat reflective mat with a free flowing AB and maybe a velocity stack (though they were proven useless (as I recall)) you'll gain something? I say just do what everyone does and whack holes in the airbox or get a later airbox (I think it was '06 and later?). So anyway... we're back to the VStacks being useless right? (Message edited by M1Combat on December 02, 2011) (Message edited by M1Combat on December 02, 2011) | ||
| M1combat |
Maybe Slaughter knows? He's damn near the only guy I trust on a lot of this stuff. Everyone else is selling stuff. No offense Matt... I'm just saying. 4-8HP eh? Can you show me something reputable where someone even gained 2-4HP just by swapping a v-stack and opening an air-box? I mean if you go to an open airbox with the stock sized K&N (not that teency one in the pic up there) and a heat reflective mat I might accept 2-4 with no tuning but even then I'd have trouble accepting 4 unless someone told me they also tuned it... But you can get 2-4 out of tuning a bone stock bike so... | ||
| Guell |
the airbox had to do with the 03's being shapped differently over the filter. | ||
| Trojan |
4-8HP eh? Can you show me something reputable where someone even gained 2-4HP just by swapping a v-stack and opening an air-box? It was routinely possible with the early 2002-2003 XB9 models simply because the stock airbox wasn't very efficient at all. You didn't need to fit a V-stack either, just removing the stock airbox cover and fitting an open airbox kit was enough to improve performance substantially. One German company measured a 10bhp increase which I think was a little high, but 4-8 was perfectly feasible. Later XB models from 04 on had improved airbox cover design (above the filter) and started to get holes in the airbox cover too, so aftermarket improvements were obviously less as the factory airbox design improved. However even on late model 09-10 Xb models you can improve power simply be getting rid of the inner airbox cover, which is designed to reduce noise rather than increase power. | ||
| Skinstains |
The 03 airbox top didn't have the peak molded in it that the later years did... | ||
| Rsh |
Here are a couple of links to the testing. http://www.hillbilly-motors.com/html/hbm_fast.html http://www.hillbilly-motors.com/html/velocity_stac k_challenge.html | ||
| Ourdee |
Trojan, I have an 08xb12xt. Just by getting rid of the inner cover I'll improve the power? Should I keep the part of the cover that has the pointed section in the roof of the inner? | ||
| Trojan |
Trojan, I have an 08xb12xt. Just by getting rid of the inner cover I'll improve the power? Should I keep the part of the cover that has the pointed section in the roof of the inner? The later bikes had much more efficient airboxes than earlier bikes did, so benefits will be less than on a 2003-2005 bike for instance. That doesn't mean that you won't get some improvement on an 08 bike, just not so much. If you want to get rid of most of the inner airbox then you can do so either by cutting holes in it or using an aftermarket airbox kit such as this http://www.trojan-horse.co.uk/prods/96.html. You MUST keep the centre sction that covers the air filter otherwise you will have no filtration at all  | ||
| Natexlh1000 |
My friend turned his 2004's inner airbox into a saltshaker with a 2" hole saw and installed a K&N filter. He said that he noticed an immediate improvement. He also removed some odd-looking rubber tube snorkel thing. I think it went in the little air scoop for some reason. Beats me what it's supposed to be there for but it wasn't missed when it was removed. | ||
| Boltrider |
The hole in the frame was intended for a charge pipe....a turbo charge pipe. Needless to say, that idea never made it to production. Someone got in the way of it. | ||
| Natexlh1000 |
I know the sad story of the turbo XB9 that never was but the snorkel hole in the frame of the production bikes had some sort of rubber liner in there. Sound deadening? His kids were running around with it on their arm like a gauntlet for a while |
