Wideband spiked 21.0 3rd and 4th gear pull

[1998jeremy]

Like the title says did a 3dr and 4th gear pull and wideband spiked 21.0. At wot it was good at 11.3-11.8. Volts was above 14. Car still feels like it was pulling but i let out pretty quickly
Bad sensor?
Bad gauge?
Or fuel pumps?
The car is rebuilt with 10.7 compression is on e85 has posi race port with 2.76 and 4lb lower kb bap aem 320 pumps 80lb injectors sct ba2600

 

[MG0h3]

When did you see that? Right after letting off? Says you were good wot


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[Bdubbs]

If you were still in it, I'd do some data logging. But I'd really buy a new sensor. My LSU 4.9 lasts only about 12-18 months. Generally mine stops working completely or it's very delayed.

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[gt347mustang]

If you didn't feel a loss of power at that a/f the reading isn't real

 

[1998jeremy]

When did you see that? Right after letting off? Says you were good wot


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It was good at the start of the pull. I let out when it went 21.0

 

[1998jeremy]

What should it read with just the key on car off? Mine was at 14.5 then started jumping around 15.1 15.6 then straight to 21.0

 

[Bdubbs]

What should it read with just the key on car off? Mine was at 14.5 then started jumping around 15.1 15.6 then straight to 21.0

Might depend on different brands. Mine is 19.99 with key, engine off.

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[Zemedici]

Gauges fail all the time as well

 

[1998jeremy]

Only thing that worries me is it seems to be working fine idling and cruising. I did another pull I was melting the tires off in second and the gauge went 21.0. Doesn't feel like I'm loosening power

 

[Bdubbs]

Only thing that worries me is it seems to be working fine idling and cruising. I did another pull I was melting the tires off in second and the gauge went 21.0. Doesn't feel like I'm loosening power

You need to start data logging. Get out of boost once it goes 12.0+.

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