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View Full Version : S14 was running perfect, now runs really rich (9.9)


jacobzking
07-15-2012, 08:03 PM
I bought an enthalpy tuned ECU a few months back and its been running perfectly on my s14. but suddenly, with no modifications, it just started running too rich to even drive. idle is normal (14.6ish) but under WOT it runs around 9.9-10.0. It used to run perfectly right around 11 but not anymore. And now the car feels sluggish with the low AFR.

Pretty stock S13 SR w/ nismo t-stat, fmic, exhaust, 550s, z32, s15 t28.

Any help would be greatly appreciated. Track day in 5 days. Also, I've ran this exact setup at track day last month and the car ran like a dream.

gostrider
07-15-2012, 08:19 PM
o2, maf maybe?

godsmack
07-16-2012, 05:29 PM
coolant sensor