1UZFE Supra - Factory ECU Air Fuel Ratios

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I installed a Innovate LC-2 wide band to see where the factory ECU runs its AF ratios, my car has always had a bit of hesitation but it seems like its getting PLENTY of fuel. Now I know why people can apply around 8lbs of boost to the factory ECU with little issue.
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Wow, that is so rich! Plenty of fuel is right. I have the VVTi 1UZFE (GS400) and before I installed my tuner it was running 13.1ish (intake and exhaust) during WOT pulls. I have mine tuned to the 12.6 - 12.8 range now and I still get soot in the exhaust tips. I cannot imagine the soot build-up in your tips!

ForwardMomentum
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what 1uz, non wti? wti? pre94 or 95-97(plastic maf)?

coolakoffartem
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Are you planning on running Turbo later this year? If so, what kind? I'm thinking Holset with an actuator set on 8lbs

UnboundSX
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Too rich for atmo, i have aem wideband, on 1uz, with hotwire maf(96 year) on cruise 15, 4afr, on open loop 12, 6~13, 5afr,

Turbokick
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