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My '02 SE-R had DFCO, so your '04 does, too. You can't rely on the SG2 showing you when it occurs, since the SG2 relies on the TPS setting you set for cutoff, in combo w/open loop. If your cutoff is set wrong, the SG display will be wrong.
My Sentra's specs put it into DFCO with rpm >2500. In its top (6th) gear, that only occurred >65 mph. My xB goes into DFCO w/rpm >1500. In its top (5th) gear, DFCO kicks in at any speed >35 mph. DFCO is much more useful in the Scion. Plus, when the Nissan goes into DFCO, it wants to stay in open loop for the next 4 minutes, burning fuel inefficiently the whole time. When the Scion goes into DFCO, it returns to closed loop instantly, so it's burning stoichiometric (efficiently) right away.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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