To much air??

[migs16]

I've been mega tuning for a while now and my afv won't stay at 100 it keeps dropping to 90-95. I'm running a open airbox mod, snookle delete, and I have a carbon fiber airbox cover with the ports on top.

can all this air be making my bike run lean? Has anyone had this problem?

If so what should I do?

 

[dave_xb12r]

data log my friend

 

[Jobe Zeebuh]

^^^ I was wondering were you were Dave!

 

[ich]

if afv drops the bike is not running lean, but rich. otherwise afv would increase. buells do not run lean.

 

[Paniller]

no such thing as too much air. Not enough fuel! lol

 

[rrh481]

buells do not run lean.

False that's why I had to get mine dyno tuned.

 

[ich]

they ripped you. ddfi protects the engine. no buell will run lean on wot (except some idiot disabled the o2 sensor).

 

[MotoX6]

Does anyone run an open air box mod and k&n with only the snorkel and scoop for air intake? ie..no holes in the air box cover? just delete the inner air box and letter go?

 

[BuellerPilot]

Does anyone run an open air box mod and k&n with only the snorkel and scoop for air intake? ie..no holes in the air box cover? just delete the inner air box and letter go?

That is exactly what most do. Adding holes, vents, and or scoops to the stock airbox cover/tank does nothing more then change the looks and adds novelty. It will increase intake noise to the rider as well. The stock side scoop on the 05 and earlier and the scoop behind the gas cap on the 06 and later not too mention the big gaps around the airbox/tank cover is more then enough for these engines to breath with airbox deletes w/ K&N's and pipes running stock heads, valves, cams, throttle bodies, etc.

~Mike....

 

[squidbuellie]

Thank you!!

ddfi protects the engine. no buell will run lean on wot (except some idiot disabled the o2 sensor)

 

[anrkizm95]

buells do not run lean.

false

no buell will run lean on wot

true unless there are other probs

That is exactly what most do. Adding holes, vents, and or scoops to the stock airbox cover/tank does nothing more then change the looks and adds novelty. It will increase intake noise to the rider as well. The stock side scoop on the 05 and earlier and the scoop behind the gas cap on the 06 and later not too mention the big gaps around the airbox/tank cover is more then enough for these engines to breath with airbox deletes w/ K&N's and pipes running stock heads, valves, cams, throttle bodies, etc.

true this is like school

 

[rrh481]

Mine ran lean in the front cylinder due to the new full system exhaust and not enough fuel

 

[MotoX6]

alright thanks pilot i was wondering what the vents on them do! that helps alot i think the delete will be enough then.

sorry to jack some of the thread haha

 

[ich]

buells do not run lean.

false

why are some people so eager to show that they do not have the slightest clue of what they are talking about?

buells are mapped to stoich and run 10% rich in wot. ddfi monitors o2 in open loop and afv is raised if o2 signals a lean mixture.

 

[rrh481]

K theirs one o2 sensor how about the front?

 

[Livers]

buells are mapped to stoich and run 10% rich in wot. ddfi monitors o2 in open loop and afv is raised if o2 signals a lean mixture.

ich, got a question. What happens to that 10% WOT enrichment when the AFV moves lower for example? Is it across the entire map, or only the CL areas? Never had a good understanding on how that works.

 

[dallasb]

ich, got a question. What happens to that 10% WOT enrichment when the AFV moves lower for example? Is it across the entire map, or only the CL areas? Never had a good understanding on how that works.

It moves the whole fuel curve.

Not all buells run rich from the factory. My 06 xb9 needed more fuel in a few areas to run stoich. With that being said it did need fuel taken away in a few places as well. That was with EVERYTHING being stock all the way down to the warning stickers. I tested with both ecmspy and tunerpro and got the same results. YMMV

 

[ich]

Is it across the entire map, or only the CL areas?

afv affects open loop only.

 

[ich]

I tested with both ecmspy and tunerpro and got the same results.

how did you test what?
which area?

 

[anrkizm95]

why are some people so eager to show that they do not have the slightest clue of what they are talking about?

i dont know i thought everyone knew they ran lean just not at wot a rich running bike will never get epa approval erik has stated his bikes run lean.thats why he is going through epa testing with the new bikes.There is a particular ratio of air to fuel that results in all of the oxygen molecules combining chemically with all of the fuel molecules. This ratio is 14.7:1, meaning 14.7 parts of air for every 1 part of fuel. Running an engine at this particular air/fuel ratio helps to minimize emissions and maximize fuel economy,wich is what the epa whants but this air/fuel ratio is generally not safe to run at high RPM and/or engine load conditions. Since most oxygen sensors produced are only meant to accurately measure a 14.7:1 air/fuel ratio, they shouldn't be used in applications where much richer or leaner target air/fuel ratios are selected. The wide-band oxygen sensor used with this system is capable of accurately measuring a much wider range of air/fuel ratios. This system can measure any ratio from as rich as 9:1 to as lean as 16:1.