Newbie KLX250 from the UK
#51
08-13-2013 | 07:26 PM
Senior Member
Joined: Apr 2013
Posts: 279
From: Blackburn, England
1st Gear Member
Minor problem with that -I moved a few months ago to Cheshire from Gisburn ~ not sure next time I will heading to North Lancs / Yorks on the KLX, but I will let you know next time I am heading north.
You could take a look at TRF (Welcome to the TRF) most areas seem to have regular runs and are keen to show new members routes and make sure you get home in one piece - I have joined Manchester group this year and been out around the Peak District, excellent use of your bike. You could also take a look at http://www.trailwise.org.uk this shows routes and their status {who can use them Cars / Bikes / Horses / Walkers etc}, non members get a limited 3km radius searching - membership of the TRF allows you to search much bigger areas
You could take a look at TRF (Welcome to the TRF) most areas seem to have regular runs and are keen to show new members routes and make sure you get home in one piece - I have joined Manchester group this year and been out around the Peak District, excellent use of your bike. You could also take a look at http://www.trailwise.org.uk this shows routes and their status {who can use them Cars / Bikes / Horses / Walkers etc}, non members get a limited 3km radius searching - membership of the TRF allows you to search much bigger areas
had a great weekend there.
Thanks for the links i'll definitely check those out.
would be great to have someone to ride with, not many of my friends have offroad/ds bikes to go off adventuring with.
Last edited by zl PINHEAD lz; 08-14-2013 at 01:14 PM.
#52
08-14-2013 | 08:18 AM
Thread Starter
|
Member
1st Gear Member
Joined: Jul 2013
Posts: 34
From: Wigan, England
I was down Cheshire over the weekend, british superbikes was on at oulton park.
had a great weekend there.
Thanks for the links i'll definitely check those out.
would be great to have someone to ride with, not many of my friends have offroad/ds bikes to go off adventuriong with.
had a great weekend there.
Thanks for the links i'll definitely check those out.
would be great to have someone to ride with, not many of my friends have offroad/ds bikes to go off adventuriong with.
If anyone would like a ride on the roads i would be up for that
#53
08-14-2013 | 08:34 AM
Senior Member
Joined: Apr 2013
Posts: 279
From: Blackburn, England
1st Gear Member
did you camp there? ill be taking it next year. Did you take yours?I'm up for a ride out any time mate
#54
09-02-2013 | 01:41 PM
Member
Joined: Dec 2011
Posts: 78
From: Cheshire, in between the Welsh hilly bits and the Peak district hilly bits - just about in the North
1st Gear Member
Ride the Peak District
For those is lucky enough to live in the UK there are a number of rides being organised to explore the Peak Distric (Derbyshire and Cheshire). Various routes at various levels take a look @ TRF Forums • View topic - Peak Districts Cycle Fest 5th to 15th September RIDEOUTS
This is a sort of unofficial tag on to the National Park (motor)cycle exploring event. Ride the Peak whilst you still can
Will
This is a sort of unofficial tag on to the National Park (motor)cycle exploring event. Ride the Peak whilst you still can
Will
#55
09-02-2013 | 05:45 PM
Senior Member
Joined: Apr 2013
Posts: 279
From: Blackburn, England
1st Gear Member
For those is lucky enough to live in the UK there are a number of rides being organised to explore the Peak Distric (Derbyshire and Cheshire). Various routes at various levels take a look @ TRF Forums • View topic - Peak Districts Cycle Fest 5th to 15th September RIDEOUTS
This is a sort of unofficial tag on to the National Park (motor)cycle exploring event. Ride the Peak whilst you still can
Will
This is a sort of unofficial tag on to the National Park (motor)cycle exploring event. Ride the Peak whilst you still can
Will
#56
03-28-2017 | 12:28 PM
Junior Member
Joined: Mar 2017
Posts: 2
Everyone on his forum that puts on better flowing exhausts or opened up the airbox a tad....HAS CHANGED THE JETS IN THEIR CARB!!
The EFi is no different to the Carb in that respect. If you play with higher air flow in the airbox or better flowing exhausts, you have to add more fuel into the AFR (air fuel ratio) or your bike will be running to lean. The 2 big give away symptoms with a lean running klx is it will be running hot (richer the mix the cooler the engine runs) & No.2 is exhaust popping noises on deceleration....they sound good but your running lean!! And does your bike easily pull wheelies off the throttle?? Does it accelerate quickly? Does it go 90mp/h.......if not, it's running to LEAN.
Find a quiet friendly MOT station & ask if they would stick their emission tester up your exhaust pipe! Try idle, 3000rpm, 6000rpm & 8000rpm & see your AFR ratio. You want to see very low 13.0 - 13.5's for rich clean running. I'll bet your running in the mid to high 14's without a 02 eliminator.
The KLX-s & sf (D-Tracker) with EFi are all made in Thailand. I think the UK, Australia, Indonesia, Spain, Greece, Brazil, Philippines, Thailand & Japan all get the Thai made EFi model.
The EFi model is easier for manufacturers to control to get through euro3 emission tests than a carb model. The 02 sensor is is trying it's hardest to make your bike run lean & therefor slow....for a emissions test pass!!
Luckily for us Kawasaki left us a few back door loop holes in the system to exploit/play with....The clutch by-pass mod & an 02 eliminator unit.
For the price of an inch of cable & a 20 quid 02 eliminator.....it's easier & cheaper than pulling the carb off & buying a dynojet kit.....enjoy
If your bike fails it's emission test for your MOT in the future.....Just pull off the clutch wire & plug your 02 sensor back in & then pass the test & plug it all in again when you get home.
The EFi is no different to the Carb in that respect. If you play with higher air flow in the airbox or better flowing exhausts, you have to add more fuel into the AFR (air fuel ratio) or your bike will be running to lean. The 2 big give away symptoms with a lean running klx is it will be running hot (richer the mix the cooler the engine runs) & No.2 is exhaust popping noises on deceleration....they sound good but your running lean!! And does your bike easily pull wheelies off the throttle?? Does it accelerate quickly? Does it go 90mp/h.......if not, it's running to LEAN.
Find a quiet friendly MOT station & ask if they would stick their emission tester up your exhaust pipe! Try idle, 3000rpm, 6000rpm & 8000rpm & see your AFR ratio. You want to see very low 13.0 - 13.5's for rich clean running. I'll bet your running in the mid to high 14's without a 02 eliminator.
The KLX-s & sf (D-Tracker) with EFi are all made in Thailand. I think the UK, Australia, Indonesia, Spain, Greece, Brazil, Philippines, Thailand & Japan all get the Thai made EFi model.
The EFi model is easier for manufacturers to control to get through euro3 emission tests than a carb model. The 02 sensor is is trying it's hardest to make your bike run lean & therefor slow....for a emissions test pass!!
Luckily for us Kawasaki left us a few back door loop holes in the system to exploit/play with....The clutch by-pass mod & an 02 eliminator unit.
For the price of an inch of cable & a 20 quid 02 eliminator.....it's easier & cheaper than pulling the carb off & buying a dynojet kit.....enjoy
If your bike fails it's emission test for your MOT in the future.....Just pull off the clutch wire & plug your 02 sensor back in & then pass the test & plug it all in again when you get home.
I know old thread but might be reactivated
Is this really true, I mean, does somebody do the actual AFR measurements, without O2 eliminator, and with O2 eliminator? I found one guy with a blog explaining that there is actually a way to see if the AFR is rich or lean. It is also explained in the service manual.
The thing is you can measure the oxygen sensor voltage. With PAIR valve blocked it should be no more then 0.8volts. With PAIR open, 0.24v or less. Meaning that the voltage in the sensor should be from 0.24v to 0.8v. If it is less than 0.24v than it is extremely lean. More that 0.8volts it is rich. I try this with the stock exhaust and with kdx200 snorkel and the voltage is from 0.8v to 0.9v so not lean at all. I also attached the voltmetter while riding in all gears and observing the voltage, but I did not get values less than 0.77volts.
About the guy I have learn this from:
https://corecatcher.wordpress.com/20...i-snorkel-mod/
He has also mounted Leo Vince with plug for the sensor (so mounted, not eliminated) and the measurements were also OK.
https://corecatcher.wordpress.com/20...-leo-vince-x3/
So I also don't think that the EFI in the KLX is so dump, It has some logics and can do the actual corrections about the mixture with its own O2 sensor.
So guys what do you think?
Last edited by Trninka; 03-28-2017 at 12:30 PM.
#57
07-11-2021 | 06:05 AM
Junior Member
Joined: Nov 2018
Posts: 20
1st Gear Member
Everyone on his forum that puts on better flowing exhausts or opened up the airbox a tad....HAS CHANGED THE JETS IN THEIR CARB!!
The EFi is no different to the Carb in that respect. If you play with higher air flow in the airbox or better flowing exhausts, you have to add more fuel into the AFR (air fuel ratio) or your bike will be running to lean. The 2 big give away symptoms with a lean running klx is it will be running hot (richer the mix the cooler the engine runs) & No.2 is exhaust popping noises on deceleration....they sound good but your running lean!! And does your bike easily pull wheelies off the throttle?? Does it accelerate quickly? Does it go 90mp/h.......if not, it's running to LEAN.
Find a quiet friendly MOT station & ask if they would stick their emission tester up your exhaust pipe! Try idle, 3000rpm, 6000rpm & 8000rpm & see your AFR ratio. You want to see very low 13.0 - 13.5's for rich clean running. I'll bet your running in the mid to high 14's without a 02 eliminator.
The KLX-s & sf (D-Tracker) with EFi are all made in Thailand. I think the UK, Australia, Indonesia, Spain, Greece, Brazil, Philippines, Thailand & Japan all get the Thai made EFi model.
The EFi model is easier for manufacturers to control to get through euro3 emission tests than a carb model. The 02 sensor is is trying it's hardest to make your bike run lean & therefor slow....for a emissions test pass!!
Luckily for us Kawasaki left us a few back door loop holes in the system to exploit/play with....The clutch by-pass mod & an 02 eliminator unit.
For the price of an inch of cable & a 20 quid 02 eliminator.....it's easier & cheaper than pulling the carb off & buying a dynojet kit.....enjoy
If your bike fails it's emission test for your MOT in the future.....Just pull off the clutch wire & plug your 02 sensor back in & then pass the test & plug it all in again when you get home.
The EFi is no different to the Carb in that respect. If you play with higher air flow in the airbox or better flowing exhausts, you have to add more fuel into the AFR (air fuel ratio) or your bike will be running to lean. The 2 big give away symptoms with a lean running klx is it will be running hot (richer the mix the cooler the engine runs) & No.2 is exhaust popping noises on deceleration....they sound good but your running lean!! And does your bike easily pull wheelies off the throttle?? Does it accelerate quickly? Does it go 90mp/h.......if not, it's running to LEAN.
Find a quiet friendly MOT station & ask if they would stick their emission tester up your exhaust pipe! Try idle, 3000rpm, 6000rpm & 8000rpm & see your AFR ratio. You want to see very low 13.0 - 13.5's for rich clean running. I'll bet your running in the mid to high 14's without a 02 eliminator.
The KLX-s & sf (D-Tracker) with EFi are all made in Thailand. I think the UK, Australia, Indonesia, Spain, Greece, Brazil, Philippines, Thailand & Japan all get the Thai made EFi model.
The EFi model is easier for manufacturers to control to get through euro3 emission tests than a carb model. The 02 sensor is is trying it's hardest to make your bike run lean & therefor slow....for a emissions test pass!!
Luckily for us Kawasaki left us a few back door loop holes in the system to exploit/play with....The clutch by-pass mod & an 02 eliminator unit.
For the price of an inch of cable & a 20 quid 02 eliminator.....it's easier & cheaper than pulling the carb off & buying a dynojet kit.....enjoy
If your bike fails it's emission test for your MOT in the future.....Just pull off the clutch wire & plug your 02 sensor back in & then pass the test & plug it all in again when you get home.
Not only will a lean engine make less power, running lean is also bad for your engine.
I redesigned the O2 dongle, after 2 people on my KLX250 Riders Facebook list, had theirs fail.
it's not surprising, because the resistor leads are very fragile, and the resistors shouldn't stick out of the connector, like they do.
I clearanced the O2 connector, so that each resistor fits inside the connector, I then fill the resistor side with black RTV, and I put a black silicone vacuum cap on it.
This way the leads won't break and cause an open, either on the heater side, or the signal, but either way it won't work properly, and it will trigger the EFI light.
#58
07-11-2021 | 06:09 PM
Senior Member
Joined: Mar 2021
Posts: 474
From: Rural Unincorporated Los Angeles County
1st Gear Member
Hello all
I know old thread but might be reactivated
Is this really true, I mean, does somebody do the actual AFR measurements, without O2 eliminator, and with O2 eliminator? I found one guy with a blog explaining that there is actually a way to see if the AFR is rich or lean. It is also explained in the service manual.
The thing is you can measure the oxygen sensor voltage. With PAIR valve blocked it should be no more then 0.8volts. With PAIR open, 0.24v or less. Meaning that the voltage in the sensor should be from 0.24v to 0.8v. If it is less than 0.24v than it is extremely lean. More that 0.8volts it is rich. I try this with the stock exhaust and with kdx200 snorkel and the voltage is from 0.8v to 0.9v so not lean at all. I also attached the voltmetter while riding in all gears and observing the voltage, but I did not get values less than 0.77volts.
About the guy I have learn this from:
https://corecatcher.wordpress.com/20...i-snorkel-mod/
He has also mounted Leo Vince with plug for the sensor (so mounted, not eliminated) and the measurements were also OK.
https://corecatcher.wordpress.com/20...-leo-vince-x3/
So I also don't think that the EFI in the KLX is so dump, It has some logics and can do the actual corrections about the mixture with its own O2 sensor.
So guys what do you think?
I know old thread but might be reactivated
Is this really true, I mean, does somebody do the actual AFR measurements, without O2 eliminator, and with O2 eliminator? I found one guy with a blog explaining that there is actually a way to see if the AFR is rich or lean. It is also explained in the service manual.
The thing is you can measure the oxygen sensor voltage. With PAIR valve blocked it should be no more then 0.8volts. With PAIR open, 0.24v or less. Meaning that the voltage in the sensor should be from 0.24v to 0.8v. If it is less than 0.24v than it is extremely lean. More that 0.8volts it is rich. I try this with the stock exhaust and with kdx200 snorkel and the voltage is from 0.8v to 0.9v so not lean at all. I also attached the voltmetter while riding in all gears and observing the voltage, but I did not get values less than 0.77volts.
About the guy I have learn this from:
https://corecatcher.wordpress.com/20...i-snorkel-mod/
He has also mounted Leo Vince with plug for the sensor (so mounted, not eliminated) and the measurements were also OK.
https://corecatcher.wordpress.com/20...-leo-vince-x3/
So I also don't think that the EFI in the KLX is so dump, It has some logics and can do the actual corrections about the mixture with its own O2 sensor.
So guys what do you think?
#59
07-11-2021 | 06:48 PM
Junior Member
Joined: Nov 2018
Posts: 20
1st Gear Member
That's very interesting!
I had all the mods, on my 2018 KLX250, full FMF Q4/Powerbomb, Hiflo, PAIR valve delete, with a Powercommander fuel controller, with the O2 sensor connected, and I bought the fuel controller used, and never got the O2 dongle, and I thought the bike ran great. I was seriously looking at big bore kits.
And then... I did the O2 dongle mod, by soldering the 330 ohm resistors into the Powercommander harness, and I did away with the secondary throttle.
It felt like a totally different bike, exact throttle response, more power across the whole RPM range and the Powercommander fuel controller could finally do its thing, without fighting with the ECU. It ran so strong, that I stopped looking for a big bore kit. I'm still getting one, but its not as urgent, 292cc, or 330cc.
I had all the mods, on my 2018 KLX250, full FMF Q4/Powerbomb, Hiflo, PAIR valve delete, with a Powercommander fuel controller, with the O2 sensor connected, and I bought the fuel controller used, and never got the O2 dongle, and I thought the bike ran great. I was seriously looking at big bore kits.
And then... I did the O2 dongle mod, by soldering the 330 ohm resistors into the Powercommander harness, and I did away with the secondary throttle.
It felt like a totally different bike, exact throttle response, more power across the whole RPM range and the Powercommander fuel controller could finally do its thing, without fighting with the ECU. It ran so strong, that I stopped looking for a big bore kit. I'm still getting one, but its not as urgent, 292cc, or 330cc.
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