Sr20 air/fuel and boost - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

cpl dozier · 05-10-2013, 05:57 PM

Good afternoon everybody. I am making this posting because I am curious about my air fuel ratios. My car is currently a stock sr20det in an s13 hatch. I have a Walbro 255 fuel pump and a boost controller. I also have a blow off valve, a front mount intercooler, full exhaust. I just installed my AEM wideband and I am curious of my air fuel ratios. I set the car on 10 PSI and I am reading full rich sometimes 10.5 on the air fuel meter at WOT. Would it be safe for me to bump the boost without any tune to maybe 11 or 12 PSI as long as my air fuel ratio does not go any leaner than 11.9?

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05-10-2013, 05:57 PM	#1
cpl dozier Zilvia FREAK! Join Date: Sep 2007 Location: Fultondale, Al. Age: 36 Posts: 1,076 Trader Rating: (19) Feedback Score: 19 reviews	Sr20 air/fuel and boost Good afternoon everybody. I am making this posting because I am curious about my air fuel ratios. My car is currently a stock sr20det in an s13 hatch. I have a Walbro 255 fuel pump and a boost controller. I also have a blow off valve, a front mount intercooler, full exhaust. I just installed my AEM wideband and I am curious of my air fuel ratios. I set the car on 10 PSI and I am reading full rich sometimes 10.5 on the air fuel meter at WOT. Would it be safe for me to bump the boost without any tune to maybe 11 or 12 PSI as long as my air fuel ratio does not go any leaner than 11.9? Sent from my HTC One X+ using Tapatalk 2

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