|
I was curious today and compared the OFH tune vs. UEL v2.076 in RomRaider, trying to see why it was running leaner. I didn't see any changes in MAF scaling, but the base timing, IAT timing compensation, timing advance, intake/exhaust cam advance and AFR targets had all been tweaked. I'm not an expert but the OFH tune appears to be designed to run leaner and with more ignition timing, but also with additional dialing back of timing to compensate for heat/IATs.
I ended up taking out a little base timing at medium loads in the midrange and at high loads near redline. Drove for an hour afterwards in 90 F weather. No FLKC and minimal KC (random) so things looked pretty good in the logs. Won't know for sure though until I do some repeated pulls later this week.
|