PATCH: TephraMod V5
I'm trying to build the harness myself, but I had a few concerns. I have a switch with a light built-in, but it's wired separate. Problem is that it needs 12v to work properly. I guess I can omit the 560ohm resistor as pointed out since this just lowers the voltage that passes through to 5v, correct? I'm just worried about feeding this line into the chassis ground pin on the ECU. I guess I can just grab the +12v ignition and ground somewhere that is closer to the switch. So only the single pin connection is all that is going to the ECU.
For the 'Alternate Map ADC0F Threshold', the default value is 3.01v. Does this mean that if the pin input sees a voltage higher than this, it will switch to the alternate map? I take it we can forgo a harness and just use a straight shot wire from the alky kit failsafe to the pin on the ECU? What if we want to hook up both, IE in the off position the system uses the failsafe, but at a flip of the switch, one can have a "manual override" that automatically switches maps? In either case, would the 'Enable Alternate Maps Faster' option still have to be set to 1?
Now that I think about it, the above sounds pretty dumb, lol...who would want to switch manually to a failsafe map? Hah... hopefully future versions will be able to add multiple alternate maps then the above feature will be useful
Thanks ya'll
For the 'Alternate Map ADC0F Threshold', the default value is 3.01v. Does this mean that if the pin input sees a voltage higher than this, it will switch to the alternate map? I take it we can forgo a harness and just use a straight shot wire from the alky kit failsafe to the pin on the ECU? What if we want to hook up both, IE in the off position the system uses the failsafe, but at a flip of the switch, one can have a "manual override" that automatically switches maps? In either case, would the 'Enable Alternate Maps Faster' option still have to be set to 1?
Now that I think about it, the above sounds pretty dumb, lol...who would want to switch manually to a failsafe map? Hah... hopefully future versions will be able to add multiple alternate maps then the above feature will be useful

Thanks ya'll
Last edited by silex; Mar 26, 2008 at 10:17 AM.
I'm trying to build the harness myself, but I had a few concerns. I have a switch with a light built-in, but it's wired separate. Problem is that it needs 12v to work properly. I guess I can omit the 560ohm resistor as pointed out since this just lowers the voltage that passes through to 5v, correct? I'm just worried about feeding this line into the chassis ground pin on the ECU. I guess I can just grab the +12v ignition and ground somewhere that is closer to the switch. So only the single pin connection is all that is going to the ECU.
For the 'Alternate Map ADC0F Threshold', the default value is 3.01v. Does this mean that if the pin input sees a voltage higher than this, it will switch to the alternate map? I take it we can forgo a harness and just use a straight shot wire from the alky kit failsafe to the pin on the ECU? What if we want to hook up both, IE in the off position the system uses the failsafe, but at a flip of the switch, one can have a "manual override" that automatically switches maps? In either case, would the 'Enable Alternate Maps Faster' option still have to be set to 1?
For the 'Alternate Map ADC0F Threshold', the default value is 3.01v. Does this mean that if the pin input sees a voltage higher than this, it will switch to the alternate map? I take it we can forgo a harness and just use a straight shot wire from the alky kit failsafe to the pin on the ECU? What if we want to hook up both, IE in the off position the system uses the failsafe, but at a flip of the switch, one can have a "manual override" that automatically switches maps? In either case, would the 'Enable Alternate Maps Faster' option still have to be set to 1?
I'm trying to build the harness myself, but I had a few concerns. I have a switch with a light built-in, but it's wired separate. Problem is that it needs 12v to work properly. I guess I can omit the 560ohm resistor as pointed out since this just lowers the voltage that passes through to 5v, correct? I'm just worried about feeding this line into the chassis ground pin on the ECU. I guess I can just grab the +12v ignition and ground somewhere that is closer to the switch. So only the single pin connection is all that is going to the ECU.
5.0 volts is the maximum you want to send to the ADC input though.What if we want to hook up both, IE in the off position the system uses the failsafe, but at a flip of the switch, one can have a "manual override" that automatically switches maps? In either case, would the 'Enable Alternate Maps Faster' option still have to be set to 1?
Now that I think about it, the above sounds pretty dumb, lol...who would want to switch manually to a failsafe map? Hah... hopefully future versions will be able to add multiple alternate maps then the above feature will be useful
Thanks ya'll
Now that I think about it, the above sounds pretty dumb, lol...who would want to switch manually to a failsafe map? Hah... hopefully future versions will be able to add multiple alternate maps then the above feature will be useful

Thanks ya'll
The failsafe control unit I'm designing will have a bypass switch incorporated into it because there are instances where you would want to have that option. Say for instance you hear a funny noise with the alky kit or your AFR's are leaning out but none of the failsafe triggers are picking up an issue. Switch it to the safer maps instantly to prevent any real damage until you can take a better look at the issue. Thats just one example off the top of my head but I'm sure you can think of instances where it would be a good idea to be able to force the ECU to be on the safe side.
I have tested my EVO 8GSR EDM V5.1 96530006:
Valet mode: ok!
Flash CEL on knock: ok!
NLTS: ok!
Alt Map: ok!
Alt Wastegate:untested
Alt Boost:untested
Alt Injector:tested only with equal cc/min
Tanks Tephra!Tomorrow I will make a donation
Valet mode: ok!
Flash CEL on knock: ok!
NLTS: ok!
Alt Map: ok!
Alt Wastegate:untested
Alt Boost:untested
Alt Injector:tested only with equal cc/min
Tanks Tephra!Tomorrow I will make a donation
Heres the EVO 7 GTA rom -Evo 9 GTA rom and two Airtrek turbo Roms for when you are not busy
http://www.mediafire.com/?3mz3yyzoiur
We "only" need cel/boost/valet.
Would be really cool to have map switching but that will proberly go into the too hard basket.
Thanks
Aaron
http://www.mediafire.com/?3mz3yyzoiur
We "only" need cel/boost/valet.
Would be really cool to have map switching but that will proberly go into the too hard basket.
Thanks
Aaron



