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About sirthumpalot

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  1. With the 17's and 18's the TPS adjustment works great if the bike is close to stock. But if you open the exhaust and the intake then a tuner is really needed to get enough fuel. A TPS tweak can still help make the bottom end perfect after adding a tuner. I'm selling a ton of TPSTools for the new bikes and getting good feedback. Also with the 17's and newer you cannot just pick a TPS number. Changing the idle moves the throttle plate which affects the TPS reading. So all you do is take an initial reading to see where it's at, then go up or down 0.02V at a time testing in-between. Just like adjusting the fuel screw on a carburetor (for those of us old enough to remember carburetors), up a little, down a little until you find the best spot, nothing to it.
  2. Can anyone tell me what the factory stock setting (throttle plate closed) is for the 2016 450sxf?
  3. On those old XR's, look through the window in the flywheel with a flashlight as you turn the flywheel. When the points are at their widest point, set the gap to about the thickness of the paper used in a matchbook. That will be good enough to make it run fairly well. Check for a spark. If you have a spark then next check the compression. If it's low, check the valve clearances. If they tightened up then the compression will be low and it will be very difficult to start. If you have spark and compression but it still won't start then shoot a little starting fluid down the carb and give it a kick. If it starts for a moment then stalls, then you have a carburetor problem. If it doesn't start at all then go back and recheck spark and compression. Also if you don't know the history of the engine, check the valve timing. And do make sure you have the proper flywheel.
  4. Thanks for the feedback! Flameouts can be caused by both being too lean and being too rich, so if you still see flameouts, don't be afraid to also go lower on the TPS. Please let us know how your first test ride goes!
  5. OK great. For the guys who own one of these bikes, would there be any interest in a plug-in module that would give you the ability to increase oil output? Just thinking out loud, but maybe a little box with an adjustment knob or screw that could be turned to select the ammount of oil boost. Maybe 0% to 50% boost range or something like that.
  6. Thanks for the info. Is the oil pump then controlled by the ecu electronically?
  7. On this bike specifically, is the oil ratio set mechanically or electronically?
  8. I would love to hear feedback from anyone who has used the TPSTool on an MX bike or two, can anyone share their experience? There is one great feedback on Amazon (click here) from someone who used it on both an SX and a KX, but looking for more!
  9. @veetwo tls - You might try some of the adventure bike forums, there are most likely not a lot of guys here familiar with the 950. Maybe try the LC4 forum here at TT (click here) or maybe, etc.. I hope this helps!
  10. Check the service manual for your carb TPS settings. Some of them were set using the Ohms meter instead of voltage, though the voltage method should still work once you determine which wires you should be testing. It's possible the bike would need to be running to get voltage to the TPS. One wire will be ground, one will be power supply (+5V) and the other will be feedback. Put your black multi meter probe on something metal on the motor, and use the red probe to test each wire on the TPSTool. One will be 0V, one will be +5 and the other will be something under 1V. Now put the black probe in the wire than read 0V, and the red probe in the wire that read less than 1V, those are the 2 wires you want to work with. All of that said; on many of the carbed bikes the TPS setting doesn't make a whole lot of difference, just minor timing changes. Some of the carbed adventure bike guys tell me that if the TPS is off then the bike really has problems, but on many of the single cylinder carbureted bikes it doesn't seem to make as much difference.
  11. For anyone finding this thread, the more active thread on the same topic is found here:
  12. @SMarquez- On the newer bikes you can't really compare TPS numbers directly because changing the idle will also change the TPS reading, and while most bikes have the idle in the same general area, they're not likely to be identical. What I recommend is take the original reading (0.50v in your case) and move it up by 0.02v at a time, and give it a test. So move yours to 0.52v and give it a test. Keep moving it up 0.02v at a time as long as you see improvement. I'm guessing you'll find the best spot after just a couple of adjustments. You are correct that jumping from 0.50 to 0.64 is a pretty big jump and could likely be too much. Good luck and let us know where you end up!
  13. Whichever direction raises the voltage will give you more fuel. :-)
  14. If it's flame outs when cracking the throttle then you should be able to mostly resolve it with the TPS. Note that too much fuel will also cause flame outs. Overly tight valves will also lead to unstable idle, difficult starting and flame outs. Idle too low, or a dirty fuel injectors can also contribute. So you've got a few things to check. Try going both up and down on the TPS and see if you can zero in on the best setting.
  15. As Spud said, back the idle out until the throttle pate is all the way closed, then set the TPS to 0.40v. Now tighten the TPS and don't adjust it any more for now. Watch your meter and turn up the idle, the TPS reading will change as you adjust the idle. Keep turning the idle up until the TPS is reading around 0.54v. At this point the bike should start and idle good enough for you to get it running and warmed up. Once its warm, adjust the idle to where you like it, then report back and we'll take it from there.