no trace on ignition map

maxim · Post by **maxim** » Fri Sep 09, 2011 8:43 pm

hi
V5 + Ostrich V2 + IAW 4W6 weber ecu (27C256)

I can trace on injection map real time
but ignition map not

have any idea about it ?

thanks again

starrd · Post by **starrd** » Fri Sep 09, 2011 9:02 pm

This may be a similar to Digifant 1. The way the eprom is connected, it doesn't provide a good enough signal for data tracing to work properly, (socket booster didn't help) Grautec from germany figured out the issue and made an adapter to fix the problem. I don't know if this would help in your case because the circuit board design needs to be analyzed. On Digifant, I was able to hit trace a 256 byte table at $4000, but not one at $4100 without the adapter.

If you are just trying to tune the ignition and fuel maps, then I would suggest using a wideband to input the RPM and MAP value to TunerProRT via an ADX definition. Then you can use "data tracing" instead of hit tracing. I use my Tech edge wiideband to do this.

maxim · Post by **maxim** » Mon Sep 12, 2011 9:30 am

this problem I think not a connection or signal problem.
all the eprom signal level are 5volt and zero
also fuel map is working well

tunerpro cant detect this or my eprom adresses wrong

have any opinion mark ?

starrd · Post by **starrd** » Mon Sep 12, 2011 7:17 pm

On Digifant1 - non cali unit, it was the chip CE and OE signal from the port replacment unit that caused the issue, but I could hit trace some tables just fine.