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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through April 07, 2005 » Spend $70.00 for this guage, and Monitor A/F all the time « Previous Next »

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Norrisperformance
Posted on Friday, April 01, 2005 - 12:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

This looks like the way to go. Buy one of these
first and see if you need more fuel, before
you buy a tfi.

http://www.speedshop.org/store/Scripts/prodView.asp?idproduct=129

What do you guys think? I'm buying one!

(Message edited by norrisperformance on April 01, 2005)
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Cruisin
Posted on Friday, April 01, 2005 - 07:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I just placed my order. It looks like it would be a helpful addition anyway.
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Daveinm
Posted on Friday, April 01, 2005 - 09:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Looks badass. I think I'm gonna get one. You guys know how it hooks up? Cruisin: Make sure to post your feedback once you get it and test it out.
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Scitz
Posted on Friday, April 01, 2005 - 09:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I like the size of it, and the price. I would also get a better O2 sensor than the stock one. I've been thinking about the DynoJet WideBand commander that has an O2 sensor that reads a broader range than most and you can run logs and download to the PC.
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Outrider
Posted on Friday, April 01, 2005 - 09:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I really like it and most likely will get one once the reviews are posted on the BWB.

I have had the old style Techlusion DFO on my X1 for three years and this would be a good indicator of when it is time for another Dyno Tune and DFO adjustment.

FYI, I decided to have a dyno tune after two years and discovered that the DFO settings needed to be tweaked in order to compensate for changes in the engine as well as the aftermarket intake and exhaust system. Things do wear out and that can alter your A/F ratio.
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Al_lighton
Posted on Friday, April 01, 2005 - 10:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

See http://www.badweatherbikers.com/buell/messages/3842/16109.html?1068411675

I don't like that little digital gauge. As discussed in my article above, due to the curve variability of the regular O2 sensors, you can't count on the absolute reading for anything. The only thing it is good for is observing the meter ballistics. It is difficult to observe meter ballistic on a digital readout. An analog readout like the Autometer one works better for that.

You can not do FI fuel mapping with a non wide band sensor. You CAN do full throttle main jet setting with one per my article above.

Al
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Norrisperformance
Posted on Friday, April 01, 2005 - 10:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks Al
I will be using it and dyno runs.
So maybe I can make heads or tails
out of the readings. I plan on using
it for WOT readings just like on the dyno.
I just think if your not going to a dyno
this is the cheapest way to tune in a TFI.
I think it would be a lot better than just guessing and thats what a lot of guy's are
doing a having a hard time with it.

Xb already has an 02 sensor, which will
make for an easy install.

(Message edited by norrisperformance on April 01, 2005)
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Jerseyguy
Posted on Friday, April 01, 2005 - 11:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Exactly what Al said.
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Wheelsleaning
Posted on Friday, April 01, 2005 - 12:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Norris & Cruisin: Please post your opinion on it when you get it installed. If yall OK it, I'll order one too.
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Norrisperformance
Posted on Friday, April 01, 2005 - 12:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I've got one on the way.
You can get them with red , blue, or green lcd.
I ordered the blue.

Just in case you wanted to know.



(Message edited by norrisperformance on April 01, 2005)
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Wheelsleaning
Posted on Friday, April 01, 2005 - 12:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'll let you be the guinea pig here and wait till you post thumbs up or down.
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Crashm1
Posted on Friday, April 01, 2005 - 12:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'm agreeing with Al too but only because he's right.
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Cruisin
Posted on Friday, April 01, 2005 - 12:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Al - thanks for the input. Mike and I have the same idea - use it in addition to proper tuning - it is not going to be something that will fix your TFI all by itself - but it may at least help you from totally botching it up.
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Opto
Posted on Friday, April 01, 2005 - 07:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

At least the meter will give you a good indication if you're running very rich or very lean, which is good backup if you're undecided about why the bike isn't running like you'd expect. The LED gauges would be easier to read on the road due to the analogue layout, but the tiny size of the dyno tune one makes for easy/quick installation. I'd be inclined to put black tape over the last 2 digits so you only have to read 1 number: 1 to 3 = very lean, 5 = stoich and 7 to 9 = rich to very rich (or something like that). Just my thoughts...
I've been running a kit type LED O2 monitor off the stock XB sensor for quite a while and I can assure you these O2 monitors (whatever type) are a hell of a lot better than nothing at all. Just don't expect accurate A/F ratios from the narrow-band sensor.

Note: A wideband O2 sensor cannot be fitted in place of the stock one and connected to the ecm, its output is very different to a narrow band sensor and it requires special circuits to drive it.
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Martin
Posted on Saturday, April 02, 2005 - 01:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Opto, could that explain why my PC111 and wide-band sensor seems to 'unlearn' Could it simply be a wiring issue?
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Opto
Posted on Sunday, April 03, 2005 - 05:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Mate, sorry, I don't know anything about the PCIII, or how it's wired up, or how it works. There's a few others on this board that do know a bit about them. Maybe you could do a search and PM them. I presume the wideband sensor in your case would be wired to the ecm via the PCIII so it could convert the wideband O2 signals back into something the ecm could understand, otherwise you'd have a "check engine" light on all the time and a stored O2 fault code.
I know from running an alternate EFI system on my 12 that if the bike runs too rich for a short time the CE light comes on (O2 sensor fault code), and if it's too rich for more than a few minutes the stock ecm stays in open loop mode until I turn the motor off.
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Jerseyguy
Posted on Sunday, April 03, 2005 - 08:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Opto - Refresh my memory, when does the race ECM run in open loop & when in closed?
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Scitz
Posted on Sunday, April 03, 2005 - 10:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Opto, I've seen the WideBand Commander on some Automotive Shows and it works separate from the stock 02 sensor. The kit comes with an exhaust bung for the 02 sensor that you can weld into you exhaust system. It then connects to its own gauge and computer for monitoring. You would still have to keep a Buell 02 sensor for the ECM. Thanks for making a note of this.
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Starter
Posted on Monday, April 04, 2005 - 12:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

For an even cheaper alternative go to www.jaycar.com.au and search for "FUEL" in the KITS & MODULES" catergorie. There will be 2 LED gauges for Fuel/Air. I know the cheaper one at $14.95 works.
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Ingemar
Posted on Monday, April 04, 2005 - 07:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Jersey, I know my name is not Opto, but it does answer your question.


quote:

The first type of EFI system operates as an OPEN LOOP system. The ECM calculates and delivers spark and fuel based on a set of predetermined spark and fuel "maps." These "maps" provide the base information necessary to run the engine with only minor adjustments for external/internal environmental conditions. This method is accurate to the degree that the "maps" are accurate. The Harley-Davidson systems are open loop.

The second type of EFI system operates as a CLOSED LOOP system. This system not only uses spark and fuel "maps" but also feedback from an exhaust gas oxygen (O2) sensor to continually adjust the amount of fuel delivered. This offers the advantage of "learning" the behavior of the engine over time as well as responding to a wider variety of conditions encountered while riding than that of an OPEN LOOP system.

The Buell DDFI operates both as an OPEN and CLOSED LOOP system. This is necessary to adjust for all possible operating conditions. Buell's selection of high lift cams (which enhance engine performance) make it necessary for an open loop system at idle and wide-open throttle. Furthermore, when operating in open loop during cold start and idle, the system will utilize programmed fuel and spark maps in the ECM for ease of cold starting and to provide a stable idle. When the bike is at a steady cruising speed and operated under a light load, the DDFI system switches to closed loop operation. The system then continuously "tunes" the performance of the engine to compensate for changing conditions and provide maximum performance by using the O2 sensors input.

OPEN LOOP:
Idle and starting
slow speeds under 20mph (1500 rpm)
High speeds above 60mph (4,000 rpm)
accelerating from low speed
accelerating from high speed
decelerating

CLOSED LOOP:
Cruising between 40 - 60 mph at operating temp.
(1500 to 3500 rpm)


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Al_lighton
Posted on Monday, April 04, 2005 - 09:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Martin,
I'm assuming that you are referring to the "Hi performance" O2 sensor that Dynojet sells with the Power commander. If yes, that is NOT a wide band sensor. It is a 4 wire heated sensor that is a little different technology than the stock single wire sensor, but it is still a narrow band sensor. The reason it is important to use with a Power Commander is less that it is "higher performance" and more in that it connects directly to the Power Commander and lets the Power commander spoof the O2 signal to the ECM. I think the heated part of it is meaningless to the Buell application as the bung location on a Buell is close enough to the combustion chamber to make heating the sensor less critical then in some other non-Buell applications.

If one wants to run a wide band sensor on their bike and use it to feed the ECM, This unit from Technoresearch will do it. It not only has the wideband sensor and the interface to talk to the datalogger SW in the Vehicle Diagnostic Scan-Tool Software, but it also outputs the narrowband output needed by the ECM to run. Not cheap, though.

Al
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Ingemar
Posted on Monday, April 04, 2005 - 02:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The M300 looks interesting. Whats it cost?
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Opto
Posted on Tuesday, April 05, 2005 - 04:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Jersey, a bit more info here relating to stock XB12 ecm and closed/open loop, inspired by Al_lighton's original article on tuning with an O2 sensor.

http://www.badweatherbikers.com/cgibin/discus/show.cgi?tpc=32777&post=259679#POS T259679

It's all observation-based info, but might be food for thought. Still using the Jaycar LED kit...
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Swordsman
Posted on Monday, January 05, 2009 - 08:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

BTW, link is dead, and since no one ever bothered to mention what the part actually IS, I have no idea what to look for on the site.

~SM
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