I'm french, I have a S1 drift :
RB street port
air pump delete,
only the first O2 sensor
ABS box delete
electrical harness simplified
and many more things...
I'm not a ECU specialist. When I'm logging, I have big variations of load and AFR. Is it the same for everybody ?
- load and AFR
- logVersa.JPG (88.33 KiB) Viewed 1426 times
The RX-8 has relatively low flow for such a large MAF tube. There are also spikes and dips when the SSV and APV open and close.
The S1 ECU uses a slow processor that can not sample the O2 sensor as fast as modern ECUs.
The result is AFRs that are not smooth. You can try to adjust the VE table or MAF table to correct. Make sure that you are correcting for steady state operation and not transient conditions.