Grand Prix 500
Main Motorcycle: '99 Triumph Adventurer
Join Date: Apr 2012
Other Motorcycle: '91 Honda XR250L
I was looking at MikeIrl's thread on adding a throttle position sensor. That would be ideal for logging, since it is just a voltage from a resistor or similar. I like that idea too although hooking into the throttle shaft is a pain and I'm not yet buying a new ignitor so it would be kinda pointless. I don't know about manifold vacuum, maybe I can find some pressure sensor somewhere. Of course hooking that in would be trivial, just use the sync ports. Thanks for the suggestion.
BTW what lifts the slide higher, high manifold vacuum or low vacuum? I need to re-read about CVK carbs too...
Just got my new first-attempt jets. Put the needles up two washers and put in 115 mains. That should do for a start. I'll be able to play a little with idle mixture but with winter I probably won't be doing much full throttle testing for months. Also it's about 2 hours drive to the other side of the Cascades to find a nice safe place for testing. Maybe I'll spend the winter messing with my logger.
I think I figured out a simple/cheap device to get the wideband sensor sampling exhaust. I'll give that a try too and post here when I try it out to see if it works.
Ouch! MAP sensors are expensive! Maybe I can find a junkyard sensor. Or maybe I should just go to get a dyno test done!
Last edited by PaulBx; 11-15-2012 at 02:38 AM.