Lean at full throttle. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ThE_mOnKy · 05-25-2013, 10:42 PM

Hi, i'm having problems with my car, but im not sure where is the problem.

Im running 740cc injectors, z32 maf, blacktop sr20, my car is an S13, the car works great at low revs, if i put down the gas pedal when i hit 15 psi approx the wideband starts to read lean (13.5 - 15.0 afr) and the nistune software disconnects from the ecu. But if i partial throttle everything works great, good afr, and almost never disconnects nistune. I checked almost everything, replaced fuel pump, sensors voltages, and i dont have any idea.

Can you help me, or should i burn my car?

05-25-2013, 10:42 PM	#1
ThE_mOnKy Join Date: Mar 2011 Location: Chihuahua, MX Age: 37 Posts: 22 Trader Rating: (1) Feedback Score: 1 reviews	Lean at full throttle. Hi, i'm having problems with my car, but im not sure where is the problem. Im running 740cc injectors, z32 maf, blacktop sr20, my car is an S13, the car works great at low revs, if i put down the gas pedal when i hit 15 psi approx the wideband starts to read lean (13.5 - 15.0 afr) and the nistune software disconnects from the ecu. But if i partial throttle everything works great, good afr, and almost never disconnects nistune. I checked almost everything, replaced fuel pump, sensors voltages, and i dont have any idea. Can you help me, or should i burn my car?