I just got a tune this past weekend, and after several discussions with various people of varying knowledge, I believe that the car runs rich regardless. Has anyone ever seen a stock 370Z that isn't running rich? With an 11:1 compression, it's likely Nissan just being cautious. They have to run it even richer to account for uncaring drivers who use regular gas.
I amfully stock except for intakes (which, if anything, should make it leaner) and my tuner said I was running extremely rich.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |