AFR issues. Please help. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

makulit054 · 04-13-2008, 08:26 PM

Setup:
Sr20det with FMIC
T25
Greddy type rs bov(recirculated after the maf, before the turbo)
MBC set to 10psi
Innovative wideband:
Idle/crusing at 14.2 afr
WOT 11-12 AFR
When I coast and I let my rpms drop, the afr shoots to 22. Which is a lean condition. It will either come back to 14 on it's own but sometimes afr's will stay that way until i either put it back in gear or brake. I've also noticed when I parked and I rev as soon as my rpms hit about 2k rpm the afr's shoot up to 22 afr but when it returns to idle it will be back to 14afr. I hope I am making sense.

04-13-2008, 08:26 PM	#1
makulit054 Zilvia Member Join Date: May 2007 Location: socal Posts: 215 Trader Rating: (1) Feedback Score: 1 reviews	AFR issues. Please help. Setup: Sr20det with FMIC T25 Greddy type rs bov(recirculated after the maf, before the turbo) MBC set to 10psi Innovative wideband: Idle/crusing at 14.2 afr WOT 11-12 AFR When I coast and I let my rpms drop, the afr shoots to 22. Which is a lean condition. It will either come back to 14 on it's own but sometimes afr's will stay that way until i either put it back in gear or brake. I've also noticed when I parked and I rev as soon as my rpms hit about 2k rpm the afr's shoot up to 22 afr but when it returns to idle it will be back to 14afr. I hope I am making sense.

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