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Noangel
| Posted on Wednesday, August 18, 2004 - 08:55 pm: |
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Hi Guys, What's the deal with the Buell pro series race kit for a 12?.. Since the stock pipe comes with that "interactive" exhaust system. Will I lose midrange power in favor of low end gains if I put this kit on? or does the kit for the 12 also have the butterfly valve in there as well? There must be a reason why they've priced the race kit for the 9 and the 12 differently. I don't think it's to do with the ECM since essentially it's the same unit with a different program loaded on to it. |
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Signguyxb12
| Posted on Wednesday, August 18, 2004 - 09:00 pm: |
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yes you loose low end with thr race kit go with the alternative race kit yank snorkel K&N drill cover Race brain Drummer exhaust in that order! |
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Sshbsn
| Posted on Wednesday, August 18, 2004 - 09:06 pm: |
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Does the 12 run too lean if you yank snorkel, K&N and leave it at that for a while? Especially at low rpms where I believe the FI doesn't adjust the AF mix? |
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Signguyxb12
| Posted on Wednesday, August 18, 2004 - 09:28 pm: |
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keep the ball rolling... found the plugs are still fine after drilling K&N snorkel and drilling the exhaust |
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Noangel
| Posted on Wednesday, August 18, 2004 - 10:02 pm: |
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The alternative race kit sounds like a heap of fun, but it's a might steep for me at the moment... I'm still in recovery from the recent XB purchase... So bang for buck for the meantime... I'm sure it won't be the last mod, only the very start of the addiction... |
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M1combat
| Posted on Wednesday, August 18, 2004 - 10:10 pm: |
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The FI adjusts the mix across the entire range. It's just that the ECM doesn't "learn" in the low and high range. Once it has learned (by running at ~3200 RPM for a couple minutes), it applies the "adaptive fuel value" to the entire range. The weakness with the ECM is when you do a high speed run up a very tall mountain. You don't give the ECM a chance to relearn the AFV for your altitude. I live in the mountains and fairly regularly make a run up the hill on Hwy 260 just East of the Verde Valley. I think I gain at least 3K' going up that hill and it's never caused any trouble what so ever. I don't see any reason to not go with the Drummer and K&N only until you can afford the race ECM. Do a search on the site and you will find at least three ways to deal with the motor that controls the exhaust valve. |
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Signguyxb12
| Posted on Wednesday, August 18, 2004 - 10:26 pm: |
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the first 3 thing on the list cost less than 60 bucks 2 cost zero |
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Unibear12r
| Posted on Thursday, August 19, 2004 - 01:05 am: |
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Ah... M1 do you know/remember where we got the idea that we have to run above 3k for the ecm to "learn"? I've been looking over the manual and it states that the only two requirements for closed loop are: A) O2 sensor at operating temp. B)Operation below 5k rpm with engine under normal,steady load conditions. Thats it, no bottom rpm to closed loop operation. I've done both spirited and low rpm runs through considerable altitude changes and the bike does great so I think this is true. Did I miss something somewhere on the 3k thing? |
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Trenchtractor
| Posted on Thursday, August 19, 2004 - 04:55 am: |
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Unibear, you are speeking information that is reminding me of things Opto was sharing after he fitted the LED A/F mix indicator to his XB... I think many of you would be surprised at just how often the bike is in closed loop... Noangel, first thing is get the k&n. with the k&n my bike was running AFV 100%, spot on. Second, Drill out the air box. You will get more gains out of opening the air box that you will out of any muffler. Period. In fact, a mate of mine in Newcastle has removed his air box lid and installed an aluminium plate over the stock filter and has been raving about it ever since. I've actually butchered the bottom of my box lid to make the cap for the filter... So go your own way. |
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Noangel
| Posted on Thursday, August 19, 2004 - 11:45 am: |
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Trench: Thanks for that info. great to meet another fellow aussie.. Although I'm actually now based in Canada... Anyway I'm a little leary about swissing my airbox at the mo. Call me a wuss but it's something about wrecking something new and somewhat shiny so soon after I just bought it, that and voiding my extended unlimited kms warranty... Perhaps for the next riding season after I've had more time to bond with the bike I'd consider it... Sign: What can I say buddy I'm a newb to all things 2 wheels and sportier than a 650cc suzuki single savage. Anyway as per the advice offered here I yanked the snorkel (since I hadn't had the time to get the K&N as yet last night after reading the posts) even without it (the snorkel) on a stock system there's a noticeable improvement in performance and behavior... revs up a little quicker (Message edited by noangel on August 19, 2004) |
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Odie
| Posted on Friday, August 20, 2004 - 10:21 pm: |
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Hey Signguy- what exactly did you drill on your exhaust and what did you get out of it.......thanks, Odie |
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Chainsaw
| Posted on Saturday, August 21, 2004 - 10:53 am: |
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I've seen that 3k number thrown around a bit, I believe it is incorrect. From the Service Manual, Page 4-3 For the DDFI System to "learn" in a closed loop mode: 1. the O2 Sensor must be at normal operating temperature (engine warmed up) and 2. Operation ABOVE 5000 RPM with engine under normal, steady load conditions. if I'm wrong, Blake will correct me momentarily (Message edited by chainsaw on August 21, 2004) |
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Dscak
| Posted on Saturday, August 21, 2004 - 06:01 pm: |
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Chainsaw, just looked in my service manual and it states, "Operation below 5000 RPM with engine under normal steady load conditions" |
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Glitch
| Posted on Saturday, August 21, 2004 - 06:26 pm: |
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Hey there! I just looked at your profile, you ain't Blake!
Ya reckon that's because ya'll ain't lookin' at the same manual? 12 vs. 9 (Message edited by glitch on August 21, 2004) |
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Unibear12r
| Posted on Saturday, August 21, 2004 - 09:56 pm: |
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For the 04s its the same manual for both 12R & 9R. In this matter both 9s & 12s operate the same according to the book. I've only seen the 3k thing here on the board. I've repeated the same statement about making a run above 3k myself so I'm not trying to throw darts here, just come to a better understanding of how the FI works. |
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Glitch
| Posted on Saturday, August 21, 2004 - 10:31 pm: |
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When I changed my air box I figured the FI would figure it out after riding to and from work. That evening I flogged 'er round the back roads and everything seemed peachy. |
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M1combat
| Posted on Saturday, August 21, 2004 - 11:29 pm: |
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I think 3K is a little high myself, but that's about the middle of the range. Here - http://cds.h-dnet.com/docent/cds/BUELL700/ref_content.htm#a1 |
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M1combat
| Posted on Saturday, August 21, 2004 - 11:30 pm: |
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I don't know who to give the original credit to for that link... |
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Unibear12r
| Posted on Saturday, August 21, 2004 - 11:38 pm: |
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There's no question that it learns, but it appears that it will learn below 3k too not just above and that only makes sense the way these bikes make power. When I changed the filter & pulled the snorkel my bike seemed to figure it out real quick too. |
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Unibear12r
| Posted on Saturday, August 21, 2004 - 11:45 pm: |
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Thanks M1.... Looking at that articles date and the reference to the tuber breadbox my guess is that its pre-XB. Doesn't match the XB manuel much so... They must have changed the FI for the XB. |
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M1combat
| Posted on Sunday, August 22, 2004 - 12:00 am: |
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oops... My bad. I hadn't read that article in a while. |
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Unibear12r
| Posted on Sunday, August 22, 2004 - 01:18 am: |
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No prob. PEBCAK eh? I have WAY too many of those. Hope you can make it to Octoberfast be nice to meet ya. |