Nissan 370Z Forum - View Single Post - Part Combination Needing a Tune Immediately? Knowledge of when Z's run lean/rich?

fitisgo · 08-22-2016, 03:17 PM

Intake + Exhaust = Tune not required, maybe recommended
Intake + HFC + Exhaust = Tune recommended
Intake + Test Pipes + Exhaust = Tune strongly recommended

I have CAI/HFC/E and OEM tune. Every 500 miles or so I get some rear O2 (cat) codes, but that was only after I installed the HFC. Nissan changed the AF strategy in the 2013+ cars so they're more susceptible to SES lights than the prior models. When I monitor AF using torque, it's running rich if anything... Talking 4th gear pulls from 30MPH to ~110.

08-22-2016, 03:17 PM	#13 (permalink)
fitisgo Base Member Join Date: Nov 2015 Location: Arkansas Posts: 10 Drives: 2014 6MT Sport Rep Power: 10	Intake + Exhaust = Tune not required, maybe recommended Intake + HFC + Exhaust = Tune recommended Intake + Test Pipes + Exhaust = Tune strongly recommended I have CAI/HFC/E and OEM tune. Every 500 miles or so I get some rear O2 (cat) codes, but that was only after I installed the HFC. Nissan changed the AF strategy in the 2013+ cars so they're more susceptible to SES lights than the prior models. When I monitor AF using torque, it's running rich if anything... Talking 4th gear pulls from 30MPH to ~110.