O2's in collectors

Rich Biebel · 08-19-2019, 06:33 PM

You will see lean spikes at rpm below about 5000....

I had an O2 recorder on my Firebird LT-1 stocker and had the sensor in the collector......I added some length to it and it was better but still some very lean false readings....

It was still usable using the "smoothing" feature of that recorder to dampen the spikes......

Kirk Morgan · 08-19-2019, 06:41 PM

The low RPM readings will not be accurate. As Rich said use a collector extension for a more accurate reading. For idling in the pits we made a 12 inch collector to adjust the air fuel ratio.

Kirk

08-19-2019, 06:33 PM	#1
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: O2's in collectors You will see lean spikes at rpm below about 5000.... I had an O2 recorder on my Firebird LT-1 stocker and had the sensor in the collector......I added some length to it and it was better but still some very lean false readings.... It was still usable using the "smoothing" feature of that recorder to dampen the spikes...... __________________ Rich Biebel S/C 1479 Stock 147R

08-19-2019, 06:41 PM	#2
Kirk Morgan Member Join Date: Jan 2009 Posts: 230 Likes: 1 Liked 80 Times in 44 Posts	Re: O2's in collectors The low RPM readings will not be accurate. As Rich said use a collector extension for a more accurate reading. For idling in the pits we made a 12 inch collector to adjust the air fuel ratio. Kirk