| Author | Message | ||
     Dannybuell |
I just received my Erik Buell Racing ECM back after a reflash which included the following on my part: Tune Version: Air Filter: = K&N. Inner Air Cover: = Off. Exhaust: = Barker exhaust. IAC_clutch_out_rev_rise:= On. IAC_Decel:= On (Stock). StartUp_Cold_Light:= On (Stock). Regulator/Rectifier-Software=latest version (?? see attached). On this sheet was a handwritten note saying something to the effect; "Don't give him his ECM back until he puts his Inner Air Cover back on." and "That is a really bad idea". I put it back on. I lied about the Barker. The 02 sensors will just have work a little harder until I can afford one. On the subject of 'Regulator/Rectifier-Software', there was a 'Done' notation next to it. The race ECM and the flash before it behave quite differently than the stock unit. I just came back from a freeway romp and fourth gear buzz on the back roads in a very light cool sprinkling rain. The roads were still dry. As I approached my driveway I cut the engine, the battery light came on about 5 seconds later. I haven't seen a battery light with the stock ECM these last few weeks. I am starting to think that the stock ECM's lack of low end is by design, thus forcing you to keep your RPM's up which benefits the electrical system. The decel is not as sharp as stock but better than it was. I hope it improves. I read somewhere here that an IAC reset consists of idling the bike for 10 minutes? Is that correct? Switching ECM's back and forth several times in the last 6 months my impression electrical issues aside, is that the E-B-R ECM makes the bike run the way it is supposed to. THX | ||
| Drawkward |
I'd LOVE to know why having the inner air cover off is a "really bad idea" from the guy who wrote it. | ||
| Bartimus |
because the bike is designed to work best with the cover? | ||
| Anonymous |
That would be correct, Bartimus. Taking the inner air cover off allows air coming through the ram air location under the steering head to have really bad turbulence over the throttle bodies, and turns the ram air from postive to negative. If you run the bike on a static ar dyno it will show a power gain with the cover off. If you run it on the road it will show a power drop, and at high speeds the drop is substantial. To really tune on a dyno you need road velocity air piped at the ram air area. If you don't you are not tuning for real world conditions. The stock airbox and ram air are good up to over 160 RWHP. Only after that point do you need to modify the airbox, but the modified one will still be sealed. None of the winning race bikes run without inner airbox covers. | ||
| Bueller4ever |
The stock air box SUCKS in dirt,right past the air filter. The seals on the stock air box are horrendously bad at sealing out small grains of sand. I can't see how the throttle body gasket could hold any positive pressure. Bad idea just means they didn't create a map for no air box cover. | ||
| Breadman |
Ding, Ding, Ding! Good answer Bart! Thanks Anon for the explanation. SS | ||
| Father_of_an_era |
So, by that logic Anonymous, what is the benefit (if any) to the aftermarket external cover being vented? Does the ventilation do anything or is there simply a cosmetic value to it? Thanks! | ||
| Blake |
>>> The stock air box SUCKS in dirt,right past the air filter. Your air filter is not properly seated/sealed. You ought to get that corrected. It is not a systemic issue. >>> Bad idea just means they didn't create a map for no air box cover. I think "bad idea" is exactly as Anonymous stated: Taking the inner air cover off allows air coming through the ram air location under the steering head to have really bad turbulence over the throttle bodies, and turns the ram air from positive to negative. >>> I can't see how the throttle body gasket could hold any positive pressure. Don't feel to badly. Some folks are good at engineering, others not so much. | ||
| Frontline |
quote: The stock air box SUCKS in dirt,right past the air filter. The seals on the stock air box are horrendously bad at sealing out small grains of sand. I can't see how the throttle body gasket could hold any positive pressure. Bad idea just means they didn't create a map for no air box cover. let me guess you must be running a K&N filter? K&N doesn't filter much of anything smaller than a pebble. I would not use a K&N on anything I own. There is no dirt inside my air box. | ||
| T_man |
Not to discredit anything said already, I've experimented quite a bit with the inner cover personally. With my inner off I did net better low end power BUT I also experienced first hand 'annon's'- "at high speeds the drop is substantial' to the tune of 10mph off my top end. HOWEVER - after modifying my inner via Highscore's recommendations (one small opening near the fuel cap) I experienced both the low end increase and no loss in high speed power. Allegedly something to do with alleviating harmful harmonics while still keeping smooth airflow.. Anyone who wants to research this more should use the search function and read 'Highscore's posts on such. Very informative read. | ||
| Juniorkirk |
I have the K&N on my bike and there is dirt/sand EVERYWHERE in the air box, BUT NONE past the filter, just in the corners where the air HASNT been filtered. | ||
| Father_of_an_era |
Same here Juniorkirk! I have noticed pebbles and sand in the crevices under the inner air box as well. However, I have also noticed some build up on the throttle body. Anyone know of a safe way of removing that build up? | ||
| Bueller4ever |
Yes, it's an engineering marvel! Giant rubber bands to hold the filter on is genius! | ||
| Vinb |
Easy way to clean out the air box. First you rap a chain through both rims hook said chain to a chainfall. Now lift very fast so not to scuff the plastics on floor now remove air box and all dirt falls away. | ||
| Jaimec |
My girlfriend recommends something called a "Vacuum Cleaner." I have no idea what she's talking about. | ||
| Dannybuell |
Jaimec - I have heard those things. The neighbors use them on their pets I think, whenever it's on their dog starts howling. | ||
| Father_of_an_era |
Ha, ha, ha,very funny!  I meant removing the oily build up on the valves safely. You guys are comedians. It appears that the oil from the K&N filter may have been sucked into the throttle body leaving deposits on the throttle body flay and on the tops of the valves. Not being mechanically inclined myself, I am just looking for a little insight on this. | ||
| Froggy |
Father_of_an_era, thats a known issue with the K&N filters if they are over oiled. It can also cause damage to the O2 sensor of the oil makes it into the exhaust. I run the stock filter, no issues with sand past my air filter or oil on the valves.  | ||
| Juniorkirk |
i always thought that the oil build up on the butterflies and intake was from the that thing that comes off the heads so it doesnt build pressure up in there....i cant remember what it is...DAMN, thats going to piss me off. I did it to my XB and ran it to the catch can thingy and the oily crap disappeared from my throttle body......PLEASE HELP ME REMEMBER WHAT THAT THING IS CALLED!!! | ||
| Juniorkirk |
GOT IT!!!! Breather Re-route....i feel better now. does these things have a breather? if so, i'm guessing they run it the same way the XBs have it | ||
| Drawkward |
Anon: Serious question... What if we've blocked off the front intake and there isn't any air flow from it anymore? Anyone else want to chime in? I know Anon is probably busy building my future 1190RS  (if I had the money for one)} | ||
| Anonymous |
Yep, the ex-Buell engineers are fools, they have no idea what they are doing. If the idiots at Erik Buell Racing would simply get their technology off the internet, Geoff could be on the podium instead of just running neck and neck with the Ducati in Superbike. | ||
| Dannybuell |
More miles on the race ecm and no battery light this time. It started sprinkling 15 miles from home and the skies opened up about 20 minutes after getting home. (Message edited by dannybuell on September 19, 2010) | ||
| Anonymous |
Race ECM runs the fans more, so it takes a bit more watching out for battery charge state with extended running in the low charge zone. | ||
| Dannybuell |
THX | ||
| Budgolf |
Man I love it when Anon comes on and we get accurate information.  FWIW, making sure the filter is seated properly cuts down on a lot of debris getting past it. | ||
| Fresnobuell |
K&N doesn't filter much of anything smaller than a pebble Bull. The K&N for the Buell 1125r fits extremely well. I have had PLENTY of debris in my airbox and no evidence of anything getting past. Nothing. If you are having problems with crap past the air filter, I suggest you look at yourself when installing the air filter Yes, it's an engineering marvel! Giant rubber bands to hold the filter on is genius! No you are genius for this trollish statement. The rubber bands work fine. It's user error if you can't get it to work. | ||
| Father_of_an_era |
Well, there doesn't appear the be any debris inside to engine other than that pesky oil build up on mine. But, like I said, there are pebbles and sand like debris on the inside of the air box. I guess I will have to pull out snuffy and vacuum all of that crap up. | ||
| Dannybuell |
Father_of_an_era - Carb cleaner might help. mopar combustion chamber conditioner for the internal cleanliness was what the dodge guys do on the old plugs before a tune up. | ||
| Bueller4ever |
No you are genius for this trollish statement. The rubber bands work fine. It's user error if you can't get it to work. I will remember that when my stator dies. The air filter seal is not nearly as bad as the throttle body seal. It's not tight enough around the throttle bodies and the only thing keeping dirt out is the weight of the air box. Not to mention the breather tube, which is held on by nothing. I guess that positive pressure isn't enough to push it's way out the breather seal either. |
