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Bad o2s?? Scan Pics attached

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Old Jun 15, 2010 | 03:30 PM
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Default Bad o2s?? Scan Pics attached

I was doing some WOT runs yesterday trying to dial in my meth. After a couple decent 10psi pulls ( 2k - 7K ) I noticed the car was running pig rich. IE: 9-10AFR during driving conditions. I took the car out of CLSD to run OLSD and the problem went away. It appears that my B1S1 NB02 got fried. The B2S1 NB02 is new but, I am seeing some flux in the scan.

I have a battery relocation and am using the seat bolt for my ground. I have been advised to take it out to the frame. Do you think the poor ground could cause the flux in 02 readings?




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Old Jun 15, 2010 | 04:59 PM
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I'd be more inclined to look at the amount of meth/water mixture. Might be too much water and it's spattering on the o2s killing the heater element.

What's your mix % ?
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Old Jun 15, 2010 | 05:02 PM
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100% m1
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Old Jun 15, 2010 | 05:05 PM
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Originally Posted by Todd157k
I'd be more inclined to look at the amount of meth/water mixture. Might be too much water and it's spattering on the o2s killing the heater element.

What's your mix % ?
Say what? What do you think happens to the meth/water in the combustion chamber?
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Old Jun 15, 2010 | 05:21 PM
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Originally Posted by user_name
Say what? What do you think happens to the meth/water in the combustion chamber?
no.. too much water in the exhaust. Not an issue if he's running no mix.
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Old Jun 15, 2010 | 05:29 PM
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Originally Posted by Todd157k
no.. too much water in the exhaust. Not an issue if he's running no mix.
Not any issue either way unless you flood the engine. Water turns to steam. There is no water hitting the o2 sensors with water injection.
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Old Jun 15, 2010 | 05:32 PM
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Whats up Joe
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Old Jun 15, 2010 | 05:40 PM
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Originally Posted by Slow Z06
Whats up Joe
Sup Jerry. You definitely want a solid ground for the battery. Log the ltrims at wot to see if they are affecting wot fueling. Same thing for part throttle actually.
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Old Jun 15, 2010 | 05:43 PM
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Yea ive been meaning to fix that ground, just wasnt sure if they would tweak my 02s.

Cant log trims till I replace the sensor. Car runs too rich
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Old Jun 15, 2010 | 07:04 PM
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Don't have an answer for you, running 2 M15's is a lot of meth. Alky Control recommended a M10 and a M15 on my 427 at 17 lbs of boost.
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Old Jun 15, 2010 | 08:03 PM
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Water in the exhaust is an issue even without a water injection and that's the reason the 02 sensors must be between 9:30 and 2:30 on the clock position in the exhaust. Not saying this is the problem because I'm sure whatever exhaust you have has them properly positioned.

Good voltage is everything to electronics. Good grounds are everything to good voltage. Seat bolts do not equate to good grounds.


Is this TXZ0603 Jerry??

If so, I've been worried about you!! Called your # and got nothing and considering the recent history, that worried me.

Call me if this is that Jerry!
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