Bad news
Trying to install the mpguino to finish up the experiment.
I am able to tap into the 12v wire of the injector because it leads back into the main harness, however, looking back at the mpguino wiki, it says to tap into the wire that has 0v.
The problem is that means I have to locate the actual fuel injector.since the Subaru is boxer engine, the injector is buried under the intake manifold, which means removing it.
Furthermore, all 4 injector grounds merge together and do converge at the main harness, but when I hook up the mpguino, I do not get any data at all.
Does the mpguino need to tap into a single injector wire?
For now, Im confident in saying that this theory is 65% confirmed (until I can get the mpguino properly installed). I'll continue tracking mpg on a tank by tank basis.
Bestclimb, you mentioned I don't need vss signal to track fuel usage on mpguino. Without vss, what screen should I use on mpguino?