Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - How much does 1psi usually change your a/f?

s14unimog · 09-01-2011, 08:54 AM

yup, two separate separate maps for both fuel and timing. If you have a CEL for a faulty knock sensor it will stay tracing the knock map. I've copied my tuning adjustments to both maps for this reason.

Oh, and another thing you mentioned earlier a plug gap of 0.035". You'll find yourself closing that down to 0.025-0.028" once you get at/over 14psi. Hopefully you won't be doing this on that stock turbo though.

09-01-2011, 08:54 AM	#27
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 38 Posts: 2,415 Trader Rating: (22)	yup, two separate separate maps for both fuel and timing. If you have a CEL for a faulty knock sensor it will stay tracing the knock map. I've copied my tuning adjustments to both maps for this reason. Oh, and another thing you mentioned earlier a plug gap of 0.035". You'll find yourself closing that down to 0.025-0.028" once you get at/over 14psi. Hopefully you won't be doing this on that stock turbo though. __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson