Super rich AFR’s? Bad o2?
Ive been using the 30-0300 x series Wideband gauge for a little while now and it’s been working pretty good but now I’m not sure. I was tuned on a hot day and my AFR’s never went below 11.0 and everything was pretty good. But now all of a sudden I’m super rich I am boosting at 9-10 afr and sometimes even 8-9 afr before boost even starts. No black smoke and the car doesn’t sputter or anything. So does this sound like a bad sensor? Also if it’s a bad sensor will I just get wrong readings or can a bad sensor make it run rough?
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Originally Posted by ParKillSwitch
(Post 1607179)
Ive been using the 30-0300 x series Wideband gauge for a little while now and it’s been working pretty good but now I’m not sure. I was tuned on a hot day and my AFR’s never went below 11.0 and everything was pretty good. But now all of a sudden I’m super rich I am boosting at 9-10 afr and sometimes even 8-9 afr before boost even starts. No black smoke and the car doesn’t sputter or anything. So does this sound like a bad sensor? Also if it’s a bad sensor will I just get wrong readings or can a bad sensor make it run rough?
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tune
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Originally Posted by 18psi
(Post 1607196)
tune
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It’s smart to attach your tune and a log of the issue any time you have a tuning question. That’ll also give us an idea of whether you should just pull fuel, or if there’s a larger global issue.
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Originally Posted by curly
(Post 1607212)
It’s smart to attach your tune and a log of the issue any time you have a tuning question. That’ll also give us an idea of whether you should just pull fuel, or if there’s a larger global issue.
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Test your fuel pressure at the rail.
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Originally Posted by Ted75zcar
(Post 1607268)
Test your fuel pressure at the rail.
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