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ECMlink Inconsistent Wideband readings (10-11) during WOT pulls - Any Ideas?

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crispyimmy

Proven Member
30
13
Feb 24, 2021
Toronto, ON, Canada
Hey guys, was hoping someone could take a look to help with the troubleshooting. I've already done multiple boost leak tests at 30* ATDC as well as exhaust leaks and there is nothing external left to notice. There is a very tiny exhaust leak at the header but it shouldn't cause inconsistencies nor any difference on WOT pulls for AFR readings. VE is around the same point when these 1 point differences are seen.

24-1 and 24-2 are from the same drive, i just turned off the car to test again
24-5 is like an hour later. I've been having inconsistencies so I did the BLT and exhaust leak test and then went out today, still seem to have some. Will take any advise or help! TIA.

2.3L stroker build
FP green recently rebuilt
272 GSC S2 cams
BR7ES plugs gapped to ~0.020-0.021
2150CC FIC injectors (it was making more power and im also still not at the E85 re-tune stage)
car does have flex fuel/sensor, but it read around 10% the whole time.

thanks

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