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I have a motec unit in one of my cars but no O2. Oh that's right I tune it I don't run it in closed loop. got it. 
What about on the dyno? No A/F ratio there either? Individual runner temps???
and my outlaw 10.5 car is mechanical fuel injected. If its not about fuel economy the 02 will never tell the whole truth. EGT's are good to see if all cylinders have the same temp in the pipe but to many variables there to....timing versus fuel.
I will say the 02 is the easy way to tune to get you close but there is still no substitue for max power in a drag car for pulling plugs.
BB, TT5,Procharged 3300lb Street Car 4.79/154
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