You are so close. Which are the unused pins you are hoping the ADC0F is mapped to?

 

All of the unused pin locations on this chart:

http://www.roadraceengineering.com/e...-ecuwiring.htm


PIN #52 shows +5V, and either PIN 31 or 32 was actually empty (diagram says it should have a wire for A/C). MrFred, what pin location was the ADC0F input when you tested?

I noticed the previous owner had a S-AFC installed at one time and cut the Mass Airflow wire so I think I might pull that pin out and use it to test all of the empty locations to ENSURE I am getting a good contact. I wish it wasn't 30F degrees out and wet right now, its gonna make it a fun time.

 

The Evo 9 plug layout is completely different than the Evo 8. There are three plugs and more pins. On the Evo 9, ADC 0F is mapped to pin 64. There is no pin 64 on the Evo 8.

I just had one thought. Have you tried driving the car while logging ADC 0F? This would be another way to be sure that its not connected to something already.

If it turns out that ADC 0F is not mapped to any unused pins on the Evo 8, another option is to highjack the rear O2 ADC input. It would be extremely easy to create a software rear O2 simulator to prevent the rear O2 CEL, and then that ADC input could be used for whatever.

 

how is it coming along jamie?

 

Letting the car warm up right now. Once I confirm that the pin connections are 100% good, then I know for sure that the ADC0F isn't using any of those pins. The 8's have 2 wires we can use, the ICS auto mode input and the ICS output so there just may be 2 configurations, one for the 8's and one for the 9's.

 

So what exactly will be needed...will you hard wire or will you be using a harness or something? If we use the auto ics pin that means we can still use the button and switch on the fly?

 

The ICS switches are not ADC's, so there would be no map blending with that option. Just failsafe.

 

It all depends how Tephra can set it up. I prefer going the 0V/5V triggering concept much better. If thats the case, it'd be best to have that wire hardwired at the ecu harness. Lets just hope we can find a way to use an open port on the VIII ecu.

 

I do to...just would be nice to have the option to switch maps still using the same button.

 

PIN 42! Thank god,lol. It registered on FFFF0x8929 only. Whew, that sucked. I literally had to un-install and reinstall the Mass Air-flow pin into each empty location. Those things are a pain to take out,lol.

I got a reading of 86 out of 255 when i gave it 1.70 volts. Sound about the same as you got Mrfred?

 

hehe. I'm glad you perserviered! 86 is exactly what is should be for 1.7 volts. Having found this pin will make it much much easier to write a single patch that will work across all ROMs with minimal changes. Nice effort.

 

EVO8

May be it is easier to tackle the devil you know rather hunting for a spare pin.

I am sure one of the IC sprayer input (blue arrows) pin can be made redundant. and re-assign ADC0F to that pin? At present, I think those pins are digital inputs.

 

Thanks, god knows it sucked,lol. I was like a contortionist in my car trying to stay dry from the cold rain. The female pin (i.e; socket connector) is for 1mm pins. I'm not sure what size pins I ordered were so I'll let you guys know if they are for the larger 2mm pins or for the 1mm pins once they come in.

 

Yeah, we were using that as a backup option but some people can keep their ICS setups and still have an auxillary input now that we did the dirty work for them

 

Its good that someone does the dirty work. :-) In the end, it brings in more people who are also willing to go the extra effort. In less than a year's time, we are going to have a very excellent suite of ECU tricks.