I have a problem regarding the FTS behaviour on my Nistune ECU.
Currently I have a 44F ecu (suspected, case says it's 39F00 but I found a MEC-D009D eprom inside) with 39F00 nistune board. My car has an O2 loom. I'm running stock AFM and injectors for now.
In nistune I can't see O2 signal (It's stuck at 0 volts flat) but my FTS is acting on its own and my AFRs react to that. It doesn't matter if the O2 flag is on or off.
Is there anything that effects the FTS value other than the O2 value? The only connection I found in the logs is between the FTS and the throttle values. Whenever throttle is applied, FTS slowly rises till it hits %25(max).
Below you can see a screenshot of a cruise log, and the log itself.
- Cruise log screenshot
- nistune_fts1.PNG (25.29 KiB) Viewed 710 times