Input/Output Voltages
 

I've done quite a bit of looking on here and around the 'tubes and haven't found a lot of what I'm looking for, I don't have an AccessPort so I can't pull the data myself either, anyone willing to help out with some of these values if you have an AccessPort or just have the numbers off the top of your head? I'm looking for...

voltage scaling for the stock wideband
voltage scaling for the stock ECT sender
trigger current/voltage for the stock ignition coils
voltage scaling for the MAF in the stock tube(I know this will only be an estimate)


That should be it for now, but if I think of more I'll add them. Thanks a bunch!

i would try Foxed.ca - Mazda RX-7 Manuals the service highlights book, they usually have the charts in there

why would you want to know ?

Sadly, the FSM, workshop manual, and service highlights don't have any useful numbers in them, usually just the resistances of a properly working sensor.

And as to the why of all this, I've been working on a project for a little while that will be a complete engine management system when I'm done with it, it's for an older Mustang, but I'm hoping it can get used with rotaries as well once I have it ironed out. But... the parts I have laying around in the garage(especially sensors) are all out of RX8's, so I might as well put them to use, but I need to have some sort of baseline to scale them to before I can put it on the dyno and figure the rest out.

You can figure the values yourself since you are using custom EMS setups.

Yes, yes I can. Although having baselines established well enough for the car to start would be very helpful before fine-tuning the scaling. I was hoping someone might have them laying around and make life a little easier.

It's also been raining non-stop and sitting out in the rain with a multimeter in the 8's engine bay doesn't sound like too much fun.

I assume you are looking for values like this?

YES! Do you happen to have those for the front O2? Just voltages that relate to actual AFRs.

I had some of them in my comp in my nyc home, but since i moved, not gonna be able to give it to ya till couple months later, sorry m8

Hopefully I'll have this project done by then... haha.

If anyone has a Cobb, all you'd need to do is take a datalog with both actual AFR and front O2 voltage of the car idling for 30 seconds or so and then one lap around the block.