Stupid lean condition.
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This is a discussion on Stupid lean condition. within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Hey guys. Just wanted to see if you could point me in the right direction on this. Partial throttle onward ...

  1. #1
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    Stupid lean condition.

    Hey guys. Just wanted to see if you could point me in the right direction on this. Partial throttle onward the car runs horrible lean, like 15+. Idles at stoich and when you blip the throttle it goes right to lean. Mod list
    06 wrx
    Vf30
    Catless down pipe
    Cobb intake
    Walbro 255 ( swapped in stock pump to test..no change)
    Cobb ots vf39 map for Cobb short ram intake
    V3 access port
    Sti top mount
    I've cleaned the maf sensor and swapped pumps. Idc is only at about 65% at wot. Maf volts are around 4 at wot. Boost fine but bogs and you can feel it running hard and afr drops to 15+. Obviously it's bad so I'm taking it very easy but a little direction would be nice. Thanks guys.

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  3. #2
    zax
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    It's likely Cobb's map isn't tuned the best when it comes to tip-in enrichment.
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    I have the access tuner software to mod the map but I'm no tuner. What should it be set at

  5. #4
    zax
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    There is no correct setting. It takes time and patience. Tuning TIE can be very frustrating. Google how tos
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  6. #5
    Moderator Donkey's Avatar
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    I would check to make sure it isn't a mechanical issue before you do anything. I would start by checking fuel pressure and for post MAF/pre-turbo leaks.
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  7. #6
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    I actually found it last night. Right before the turbo inlet it had torn for whatever reason. Ordered a new turbo inlet last night.

  8. #7
    Registered User KoreanBeefcake's Avatar
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    im always finding new leaks. very annoying.

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