I do a lot of track days on my bike and I'm starting to log all my laptimes and such with a GPS datalogger. I can also get several other parameters logged i.e. RPM, throttle position, etc. wirelessly and inexpensively too. The catch is that I need to have an OBD2 connector port. I do not have one of these ports on my bike like a car does so that's a problem. How would I wire in an OBD2 connector? Can anyone help with this project or point me in the direction of a decent write up online? Thanks!

 

I don't think your going to find much online for a DIY on something this specific. If you were closer I would give you a hand myself. I've rewired my OBD2 car to be OBD1 without using a conversion harness. Reading diagrams, making my own diagrams, re-pinning connectors and soldering wires comes fairly easily to me now.

Do you know how many and what wires you need to tap into and there location on the bike? Then one would also need to know what pin locations they are to be located on the OBD2 connector end. There are 16 pin locations on the OBD2 data link connector. you'll need to know what wire goes to what pin.

Go to a local pick a part and find an OBD2 connector with the number of wires that you require. Cut it out with at least 4 inches of wire attached. that way you have lots of wire to play with.

 

Well since I'm just doing this for fun and overlaying it on some video I decided to take an alternative route for the time being. The OBD2 idea wasn't going to work out easily.

So therefore, I decided to just calculate the RPMs and then use index lookup functions in excel to place the right RPM value at each time interval.

True this way has flaws such as: not being able to follow the RPM correctly when I pull the clutch in blip the throttle while downshifting or while idling for example...but while moving it should be accurate enough for my needs.

 

What make model year is your Bike? A lot of the sport bikes already have a data link connector that you can tap into for that sort of thing.

 

'08 Yamaha R6