This is the most effective and reliable configuration.
Our meths failsafe box has a set of "voltage free" change-over contact.

 

ADC 0F is written to a RAM variable, but its not utilized anywhere in the code. So you have the perfect hook to take the signal and use it to control whatever maps you want.

If there is an equivalent ADC input on 8's then I think this will be a better solution than going with the ICS inputs.

 

This will virtually make the engine acts like a duel fuel car - with a press of a button. See you guys in tomorrow. It has been an exiting day for me.

 

and finding out if the 8's have the same 2 available pins or something similar

 

I think I will leave the interpolation for another day - getting altmaps to everyone is P1 atm

after getting my car fixed too :P hehe

ok for 94170015 ADC0F is 0xFFFF8928 (2 byte)

 

on the 8's pins 74 and 77 are free according to bez...

 

guys what about using a potentiometer, a clicky one so we can have more than 1 altmap? useful or not?

 

I'd be happy to test this out. The sooner we get this ball rolling, the better off the whole community will be

Like Richard said, since flow sensors usually increase output voltage from 0-5v, down the road we can find a way to have the mapping interpolate between the 2 map variations. This would be very similar to the ethanol sensor mapping in the newer flex fuel cars. Step one, getting the maps to switch with a 5V trigger and a 0v trigger.

 

right on!

ok first step is to find the unused pins that go with ADC0F. I suspect they will be the same as 88590015 ROM's, but can't be sure. Do you want to use the info MrFred has provided and do some multimeter taps to see if those pins are being used?

if they are the same then you will need to rig up some 5v input and then we can log that in evoscan/ml. once we have that working then I can work on some code to allow changing maps based on this 5v input.

edit - the code might be tricky as I will be flying blind, I can't test it coz I got no car so you guys will have to bear with me until I get it right

 

I plan on making a 5V voltage regulator tomorrow for less than $5 anyways, no issue there. So, these pinouts have no wiring hooked up to them at all? I'll have to make a wire insert of some sort to tap into the harness locations and see if anything is going on with those locations. I'll have to see how MrFred was doing it exactly.

 

ok you using 94170014 yeah? for ADC0F u need to log 0xFFFF8928 and 0xFFFF8929.

I imagine FFFF8928 isn't used because 255 is just 1 byte - but log it anyways just to be safe

 

K. I might be on later but the woman is calling....might be done for the night,lol.

 

sure thing - just one last thing... becareful with the ECU and volts (you know this) but for others, I don't want any blown ECU's

 

lets go jack let go...lets go jack lets go

 

If making a regulator is easy, then sounds like a plan. Another route would be to go to radioshack and buy a 1-AA or 1-AAA battery holder. This will get you ~1.6 V which is good enough to determine which pin is the unused ADC pin corresponding to ADC 0F.

Rather than using just one wire, I wired up every unused pin. I used 22 ga wire. I stripped off about 1/2", folded the stripped part over on itself, and then pushed it into the plugs with the plugs removed from the ECU. Then I secured the wires to the harness using masking tape. This way, I was able to launch EvoScan (key "on", engine "off"), and test each wire one-by-one without having to climb under the ECU or constantly turn the key on/off to move a single wire to a different location. I tested each wire first with a voltmeter to determine if it was generating a voltage. I didn't mess with the ones that did. I probably should have then tested the resistance of the wires I wanted to hook up to the battery, but I didn't. Worked out fine though. No problems with the ECU that I can see. You might want to do it though for piece of mind.

You'll want to use the USDM Evo 8 pinout as your guide. There is a listing on the RRE website. Looks like there are only 10 unused inputs, so it should be much easier for you.

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