| Author | Message | ||
     Ilikehotchicks |
My dealer has messed stuff up on me before and i wanted to double check if this part number is correct for the 12R airbox that offers improvement on the 9's. p/n p0215.1aa Also Do i need to reset my Ecm after i install it? And if so How would one go about doing that? also do i need to take out anything to fit the new one in? or will it just replace the stock one? Thanks Reuben edited by ilikehotchicks on January 21, 2004 | ||
| Prof_stack |
Yes, that is the correct p/n. Just install the new airbox and go ride your 9R and let the electronics figure it out. No problems whatsoever. And, yes, you will notice improvement in acceleration. Check out my website for some Airbox photos on my experience with the airbox changeover. Prof | ||
| Brucelee |
Awesome explanation. Thanks BTW-I have a 9 with the factory race kit. Assume this airbox mod with work with the race kit too?? | ||
| 99buellx1 |
yes | ||
| Stoobr2 |
Works fine,you should notice the difference in the throttle responce straight away. | ||
| Jerseyguy |
I have solid modeled the relationship between the stock stack and the 12's airbox. I'll post it again for those who missed it last time. Steve   | ||
| Sparky |
Another question. Has anybody measured the height of a XB12 velocity stack compared to a 9? I guess the simplest way of measuring would be from the top of the air filter to the top of the stack. The velo stacks are different parts because the injector throttle body on the 12s is larger, but don't know if the height was changed to be optimized with the inverted cone of the 12's airbox cover. Nice work, Jerseyguy. | ||
| Skully |
Do we have any quantitative results from dynamometer comparisons with the stock air box versus the XB12 box? What happens when you add extra holes like we did on the XB9 box? Thanks, Keith | ||
| M1combat |
I have no Dyno results to offer, but from what I recall, The addition of a 12 box to a 9 gives almost exactly the same improvement as the hole method but less noise. I read here that someone tried perforating a 12 box and it did nothing but make a bunch of noise. All SOTP dyno's. YMMV. | ||
| Xb9er |
buckinfubba ran the comparison between stock airbox and XB12 box on XB9 bike and has posted dyno results. | ||
| Buckinfubba |
skully it is what m1 said....if you don't mind the noise just do the swiss cheese thing to the 9 box....if the noise bugs ya go with the 12. | ||
| Stot |
AFAIK the swiss cheese method fecks the fuel consumption down to 90m/tank and the 12 lid takes it back to 110m/tank. StooBr went from swiss cheese to 12 lid and found this and also has a dyno sheet of the difference knocking about. Cya Stot | ||
| Skully |
Ok, so do we have dyno results of the XB12 air box with perforations on a XB9? Keith | ||
| Jerseyguy |
Skully - I dunno for sure but I suspect you'd have to keep the holes away from the top of the stack so as to not disturb the laminar flow in that area. | ||
| Buckinfubba |
skully I have not seen dynos but one guy here bought 2 box tops to test it and he said his butt told him the holes in it left a flat spot. My theroy os this , and let me quantify this with the fact that I have a simple mind, if you put the holes in it yes you have more air but you lose pressure. so I don't know. I just know for the few hp it might gain I don't want the noise. now if I was on the track and racing I surely would test it because every lil bit matters. see I had this theory also that if you holed it up and then used weather stripping or something to seal the outer intake cover to virtualy turn it into a big airbox it might work good. but I am fat dumb and happy with my bike right now so I ain't doin nuthin | ||
| Stoobr2 |
Following on from what my Buelling buddy Stot said, My 5,000mile 03 9s has a "vented" standard 9 airbox lid,YES it did make a difference over the OE airbox,my Muell now kicks out 75.4rwbhp & 60.1ft lbs. Like Stot said I have found the "overall" fuel consumption as dropped from approx 110 (till the light comes on) down to middle 80's (till the light comes on)*folks might get more I tend to be quite heavy on the throttle. Also the "extra" induction noise can be to much to bear on longer journeys(although I quite like it in town)I'm going to replace my "vented" 9lid with a "standard" 12lid as this increases the power still further over the chopped 9lid. There is a coupla dyno-graphs kicking around somewhere on here (Glitch) posted em for me in December,basically they show a 9s (complete with full factory race-kit) the same bike with a "vented" 9lid,and the same bike with the 12lid. These dyno runs were done back-to-back in a HD/Buell dealership in Southampton UK (which is at sea-level). At the end of the day,either a "vented" 9lid or a 12lid on the 9's base will improve a 9's performance,it will notice in the throttle responce on your 1st trip. Hope this helps | ||
| Brucelee |
Sorry if I am being a dolt here but I want to get this right before I order the airbox. If I add the 12S airbox to my 9s which is equiped with the factory race kit, I will pick up about 5 HP and 5 lbs of torque over what I have now?? Net effect is about 10 HP over the standard 9s without the race kit. Am I doing the math correctly here? If so, I am going to order the box today. Thanks | ||
| Stoobr2 |
I'm not sure of the "exact" gains,as every bike differs,but you will get an improvement & a crisper throttle responce by fitting the 12lid on a 9's baseplate. | ||
| M1combat |
Do it. 12 lid w/ no holes. | ||
| Brucelee |
I just ordered the 12 airbox. Cool, HP for just $37 plus tax! As the parts guy and I agreed, it's all about speed, sound, and looks! | ||
| Steviejay01 |
Well I just ordered mine, not had a chance to test it yet.....will let you know.... Oh and thanks to Stoobr2 (if your reading this) For letting me steal his from Southampton.... Top fella! | ||
| Kaese |
I can comment on the cheese grater 9 airbox compared the to the 12. The 12 gets much better gas mileage, less noise and a crisper throttle response. I might leave the snorkel in though, because I felt I lost a little low end torque by taking it out. | ||
| Tucsonxb9s |
Prof-stack--Great job on the description! I can't believe how simple this is. I just wonder when they figured it out at the factory and why it's not a stock piece on the new 9's. | ||
| Prof_stack |
Good question on why the XB9's don't have the 12's airbox cover. Perhaps Buell has too many produced and will make the change when the supply runs out.... Gas mileage: I'm thinking that the 12 airbox cover on the 9 will improve the gas mileage. But winter weather has made riding less feasible to check it out. I'll post my findings later but perhaps more hardy folk (or those in warmer climates) can report in. When I put 50 miles on a new XB12S I stopped to refill the tank before I returned it to the shop. Filled to the top, the new bike got over 50 mpg, and that was not by babying it. Amazing. |
