Why so Low ?? My 02's!!

[RUQWKNF27]

Well lets start with what I have New Siemen 72"s . Double Pumper with main pump hot wired . " They work , verifyed with air hose @ hot leg solenoid to 2nd pump". @ 21 lbs WOT my 02"s are around 740-750. I am running a Denso Sensor. A guy on the board told me that he has seen problems with theses showing low 02 reading but not had the time to test that theory yet against a new AC sensor I have.. A while back when got to around 15 lbs the motor would like stutter real bad so I replaced the Reg an that fixed that. I think the ball may have been sticking in the reg.. Man that would have been a nice way to say bye bye to my motor.. I have a Extender Extreme chip from Mike could it simply be that there is not enough fuel in my chip. As I do have the translator Maxed out to 14%. An yes my reg is set to 45 lbs vacumn off. When I went 11.00 @ 124 car was popping @ the end of the run slightly had C-16 in tank an saw I had a 02 reading of 746 so I put it on the trailor. Figured that was a smart move.. I'm gonna test another 02 sensor also I have another fuel gauge I want to try just in case but this one is new so who knows. any ideas guys??

 

[83ttypecooled]

Hi,
You're confident that the entire ignition system is up to par? If you are running a 10 second car, this is doubly important. Do you have an egt sensor installed? High temps would indicate lean mixture. I don't think you can really screw up your motor by running it too rich, but understand your concern.Better safe than sorry! Finally, what do you think o2 should be during a pass? Mid .7 volts is fine for my car, but then I'm only running a 13 second vehicle. Are you getting knock?That can mess everything up, as you probably know. Good luck with your trouble!

 

[Ttype6]

Could it simply be that there is not enough fuel in my chip?

Bingo!!!!

 

[RUQWKNF27]

Have you had a problem with a chip before not having enough fuel, therefore you had the same scenario as me?? Is it rare to have this problem??