AFR Much Richer than commanded

K-Series Programmable ECU installation questions / support issues
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Benson1057
Posts: 6
Joined: Fri Jun 19, 2020 8:23 am

AFR Much Richer than commanded

Post by Benson1057 »

2002 Acura RSX Type S
K20A2
Wiseco 87MM 8.9 CR pistons
Skunk2 Stage 3 tuner cams
Skunk2 Ultra Street series intake manifold
Skunk2 74mm Throttle body
Deatschwerks 2200cc Injectors
Walbro 525 Fuel Pump
handata 4 BAR map sensor
Turbonetics 6468 twin scroll 3" V band
44mm Tial wastegates
Tial Q BOV
MAC boost solenoid
3 Inch straight piped turbo-back exhaust

After many issues I had my RSX running pretty well but pretty suddenly I started having a problem where my air-fuel ratio is reading about 11:1 during idle and less than 10:1 under any acceleration, occasionally it will go back to about where it should be and work fine but then it goes right back to sluggish acceleration due to way too much fuel and I'm not really sure what might be causing it. If anyone could take a look at the datalogs I have taken and let me know if there is any indication of the issue I would appreciate it. I have also uploaded my calibration.
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x4003-k20-stg3Cams-2200ccPumpGas.kal
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idle too rich.kdl
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Spunkster
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Posts: 22745
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: AFR Much Richer than commanded

Post by Spunkster »

Has this been properly tuned on the dyno?

Have you discussed this issue with your tuner?

Why do you have the o2 heater and response disabled?
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