CLASS RACER FORUM - View Single Post

gmonde · 04-30-2019, 08:08 PM

there are several variables , where are the o2 sensors located in the header? any race mufflers? if they are located in the collector the readings will tend to be lean ,, it has been suggested to locate them in a primary tube , however the reading will be for that one cylinder but will give you a more of accurate o2 number

13.80 is a lean number(but with open headers that's more than likely in the game ),, add some jet to it and see how the car reacts to it(should richen it up ) ,, mid to high 12's is ideal

my o2s are located in the collector but my collector is tapered and long for the stock application,, mine read high 12's low 13's

04-30-2019, 08:08 PM	#2
gmonde Senior Member Join Date: Nov 2007 Posts: 615 Likes: 56 Liked 166 Times in 59 Posts	Re: O2 Reading there are several variables , where are the o2 sensors located in the header? any race mufflers? if they are located in the collector the readings will tend to be lean ,, it has been suggested to locate them in a primary tube , however the reading will be for that one cylinder but will give you a more of accurate o2 number 13.80 is a lean number(but with open headers that's more than likely in the game ),, add some jet to it and see how the car reacts to it(should richen it up ) ,, mid to high 12's is ideal my o2s are located in the collector but my collector is tapered and long for the stock application,, mine read high 12's low 13's Last edited by gmonde; 04-30-2019 at 08:18 PM.