After having a strange gremlin pop up last week that then disappeared this week (and getting some good help from the MS Extra forum, Matt at DIY AutoTune, and friends on Facebook), I have the bike up and running fairly well this week. Here is a quick video update of my Honda Pacific Coast PC800 fuel injection project.
Getting Closer with the Honda Pacific Coast PC800 Fuel Injection Tuning
I spent some time today on my Honda PC800 fuel injection conversion project. I am getting the tune file together so that I am ready to take the bike to a dyno for final tuning. The biggest things that I still need to address are 1) tidy up the wires, 2) adjust the TPS sensor so that it can sense low throttle positions, 3) finish up the primary tune, 3) figure out the enrichment settings for startup/warmup and acceleration.
I’m going to try setting up a very old NetBook running Ubuntu with TunerStudio so that I can have the ability to modify my tune while I’m out and riding. Also that will allow me to more easily log data. At some point I’ll probably get the BlueTooth wireless adapter to be able to log data with my phone while I ride.
Slowly but surely my bike is coming along! By summer, I think I’ll be out and riding again.
Building a Vacuum Reservoir for a Honda Pacific Coast Fuel Injection Conversion Project
This humble pipe will be the vacuum reservoir on my Honda Pacific Coast PC800 fuel injection conversion project. I have been working for some time on converting this carburetted bike to fuel injection. One issue has been a fluttering manifold air pressure reading from the Manifold Air Pressure (MAP) sensor when it is hooked directly to the intake runners. The solution is to have a vacuum chamber to smooth out the pulses from the opening and closing of the engine valves. The pressure readings will still be correct but without the huge flutter problems.
I JB Welded in brass fittings to the two screw ends of the PCV pipes. Once everything is dry, I will bolt it all onto the bike under the plastic.