May 12th, 2018, 08:57 PM | #1 |
ninjette.org member
Name: John
Location: Rio Rancho
Join Date: Aug 2012 Motorcycle(s): many kawasaki 2 stroke triples and a 250R now. Well no more 250R, 2013 300 now Posts: 146
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Is the Power commander what I'm looking for?
On the 2013 300 I picked up, it has a Delkevic slip on, and I am at 5500 ft. of altitude. Thick black soot in the pipe. Will a power commander be able to compensate? Or is there something better? I'm a carb guy, so totally lost here.
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May 13th, 2018, 12:14 AM | #2 |
old git
Name: Steve
Location: Geneve Switzerland
Join Date: Mar 2009 Motorcycle(s): BMW K1300S Posts: 479
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The power commander allows you to change all the fuelling parameters.
The software gives you a spread sheet with RPM down the side and the fuel values across, you can change all of these values. The problem is if you have no way of measuring the results of the changes you have made you could end up with damage to the motor. Steve
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Some mistakes are too much fun to make only once. |
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May 13th, 2018, 12:23 AM | #3 |
ninjette.org member
Name: John
Location: Rio Rancho
Join Date: Aug 2012 Motorcycle(s): many kawasaki 2 stroke triples and a 250R now. Well no more 250R, 2013 300 now Posts: 146
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IE dyno time........
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May 13th, 2018, 06:24 AM | #4 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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I would have though a good FI system would compensate for altitude automatically.
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May 13th, 2018, 07:15 AM | #5 |
ninjette.org member
Name: John
Location: Rio Rancho
Join Date: Aug 2012 Motorcycle(s): many kawasaki 2 stroke triples and a 250R now. Well no more 250R, 2013 300 now Posts: 146
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May 13th, 2018, 09:00 AM | #6 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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Maybe one of the sensors is not working.
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May 13th, 2018, 09:13 AM | #7 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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Something is wrong, fix that instead of trying to compensate.
- Measure vacuum at MAP sensor with warmed up engine - check for intake leaks around boots, hoses, clamps - measure impedance of air-temp sensor - measure impedance of engine-coolant sensor Make sure someone hasn’t wired in one of those stupid pots that lets you “adjust” engine coolant sensor and changing data about operating conditions that’s sent to ECU, thus tricking ECU into injecting more fuel. Very few EFI systems need more fuel, they tend to tend too rich for safety. Toyotas are worse with 10:1 AFRs in high-end, wasting tonnes of fuel and power. Only use PC to tune and lean out mixtures to optimum 13.5:1 once you’ve got system working perfectly stock (yours isn’t). Here what stock 300 AFR curve looks like, too rich in high-end at 12:1. Leaning it out results in +4% more power without any mods needed! Last futzed with by DannoXYZ; May 13th, 2018 at 10:50 PM. |
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May 13th, 2018, 02:45 PM | #8 |
ninjette.org member
Name: John
Location: Rio Rancho
Join Date: Aug 2012 Motorcycle(s): many kawasaki 2 stroke triples and a 250R now. Well no more 250R, 2013 300 now Posts: 146
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Thanks Dan!
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May 13th, 2018, 10:47 PM | #9 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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You're welcome!
I also forgot to mention that while older flow-based load-sensing algorithms such as AFM or MAF requires separate altitude sensor to make adjustments, MAP-sensing does it automatically!! At sea-level under WOT, MAP sensor would register about 100kpa and at 5500ft, it would measure around 80kpa and send that to ECU. The ECU would know that there's less air going into engine and will meter out the correct amount of fuel anyway. At idle and partial-throttle, due to restriction of throttle-plate, intake-manifold will be under vacuum condtions and that won't vary as much with altitude. MAP sensor should be registring around 33-36kpa at idle. Verify that with vaccum gauge with T-connection at MAP-sensor nipple. Even with carb, the 20% difference in fuel requirements wouldn't cause that much soot on your exhaust. Something's off. If your bike is CA model, it will have an oxygen sensor. Make sure it's plugged in and not bypassed with resistor. If you have oscilloscope, you can also inspect output waveform of O2-sensor. Should be roughly +/- 0.4v sinewave above & below 0.485v. Also check your TPS sensor. Measure output voltage and idle and WOT. |
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May 14th, 2018, 12:40 AM | #10 |
ninjette.org member
Name: John
Location: Rio Rancho
Join Date: Aug 2012 Motorcycle(s): many kawasaki 2 stroke triples and a 250R now. Well no more 250R, 2013 300 now Posts: 146
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OK, now things are way over my head. I don't believe it's a CA bike, and the rest, time for a manual.
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