why my AFR's are high? sr20det - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

norcalslider · 02-09-2011, 12:09 PM

well i got hooked up to a wideband and did a few pulls...setup is weird but ok..vacuum hooked up to bov and wastegate the afrs where shit like 13 down to 11.9 running 4-5psi running lean which leads to detonation and that i dont want...2nd set of pulls where with the wastegate vacuum disconnected running 12psi at 11.7 down to 10.8 running good....so why is this?...i was just told that the DP has a hole in it and coverd by exhaust wrap and my guess is that would through it all off correct. and what is the correct timing for this motor?

02-09-2011, 12:09 PM	#1
norcalslider Zilvia Member Join Date: Jan 2011 Location: reno Posts: 158 Trader Rating: (1) Feedback Score: 1 reviews	why my AFR's are high? sr20det well i got hooked up to a wideband and did a few pulls...setup is weird but ok..vacuum hooked up to bov and wastegate the afrs where shit like 13 down to 11.9 running 4-5psi running lean which leads to detonation and that i dont want...2nd set of pulls where with the wastegate vacuum disconnected running 12psi at 11.7 down to 10.8 running good....so why is this?...i was just told that the DP has a hole in it and coverd by exhaust wrap and my guess is that would through it all off correct. and what is the correct timing for this motor?