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Thread: running rich at wot

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    Jr Member crasth's Avatar
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    Default running rich at wot

    i did some logging today but my car seems to be running rich at WOT. fuel pressure seems ok. im targetting 16.5psi but i never get it in 3rd gear. i took it to jimmy couple weeks ago and he said there is no boost leak. in 4th gear i get around 16 psi. but not in 3rd. anyone has any comments as of why is it so rich now? it didnt do that before.

    cs sri+tih 91 oct. datalog25.csv
    2010 CWP ms3

    ENGINE

    -corksport stge 2 sri + tip,cpe hpfp,cobb ap,turbosmart BOV 50/50,jbr boost tubes,bpv hose
    SUSPENSION
    -H&R lowering springs, koni yellow shocks

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    Default Re: running rich at wot

    LoL get a tune you noob...prolly fubar'd MAF cal and shitty targets with some knock sprinkled in to make it even worse.
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    Jr Member crasth's Avatar
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    Default Re: running rich at wot

    Quote Originally Posted by SomeGuy View Post
    LoL get a tune you noob...prolly fubar'd MAF cal and shitty targets with some knock sprinkled in to make it even worse.
    Im just waiting for spring to get a tune so eventually i will, doesnt mean someone could maybe gimme some feedback without being a dick...

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    Jr Member mickey_g's Avatar
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    Default Re: running rich at wot

    Switch your blowoff valve to full recirc and see if it fixes the rich AFR. Could also benefit from a MAF cal

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    Sr Member Kiyomi's Avatar
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    Default Re: running rich at wot

    that is pretty rich 8.5-9 afr steady wot. prob why your not knocking seriously atm, but it must feel much slower. what did u do before this happened?

    as others have said, maf cal should help.
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    Default Re: running rich at wot

    Quote Originally Posted by mickey_g View Post
    Switch your blowoff valve to full recirc and see if it fixes the rich AFR. Could also benefit from a MAF cal
    Should only show up between shifts unless the BOV is leaking metered air to atmosphere.

    Quote Originally Posted by crasth View Post
    Im just waiting for spring to get a tune so eventually i will, doesnt mean someone could maybe gimme some feedback without being a dick...
    Nah, what fun is that?

    For the record, I gave you good feedback...get a tune. If Jimmy says there isn't a mechanical issue, than it's obviously your tune.

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    mickey_g (12-03-2014)

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    Jr Member crasth's Avatar
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    Default Re: running rich at wot

    Quote Originally Posted by mickey_g View Post
    Switch your blowoff valve to full recirc and see if it fixes the rich AFR. Could also benefit from a MAF cal
    Its actually to full rec now, when i had it 50/50 i didnt have this issue so i dontthhink thats the cause

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    Moderator loki's Avatar
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    Default Re: running rich at wot

    Quote Originally Posted by mickey_g View Post
    Switch your blowoff valve to full recirc and see if it fixes the rich AFR. Could also benefit from a MAF cal
    That shouldn't do anything, since the bpv or bpv doesn't come into play at WOT

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    mickey_g (12-03-2014)

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    Jr Member mickey_g's Avatar
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    Default Re: running rich at wot

    guess its not the valve then...usually with rich AFR issues its usually a leak or the tune itself. Try a MAF cal and see if that helps

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    Jr Member crasth's Avatar
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    Default Re: running rich at wot

    Quote Originally Posted by SomeGuy View Post
    Should only show up between shifts unless the BOV is leaking metered air to atmosphere.



    Nah, what fun is that?

    For the record, I gave you good feedback...get a tune. If Jimmy says there isn't a mechanical issue, than it's obviously your tune.
    Yeahh i want a tune, just wanna have a dp and intercooler before that. Maybe one of those stratified ots tunes help? Cuz ive been thinking about those

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    Jr Member mickey_g's Avatar
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    Default Re: running rich at wot

    yeah a custom OTS tune should keep you satisfied until you get your other mods...thats what I did until had all the mods and then got a full custom tune

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    Jr Member crasth's Avatar
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    Default Re: running rich at wot

    Quote Originally Posted by Kiyomi View Post
    that is pretty rich 8.5-9 afr steady wot. prob why your not knocking seriously atm, but it must feel much slower. what did u do before this happened?

    as others have said, maf cal should help.
    Yeah its pretty rich, i havent done anything to the car and before this it was fine. And yeah good i have no knock

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    Default Re: running rich at wot

    Quote Originally Posted by mickey_g View Post
    guess its not the valve then...usually with rich AFR issues its usually a leak or the tune itself. Try a MAF cal and see if that helps
    Technically gen2's use fuel trims during WOT unlike gen1's...so regardless of MAF cal it should run fairly close to target unless it's WAY off or is throwing it into a strange place in the tables.

    Even if he doesn't get a tune right away, he should try running a different applicable map (Stage 0, stratified OTS, etc) to see if it makes a noticeable difference in AFR's.

    Quote Originally Posted by crasth View Post
    Yeah its pretty rich, i havent done anything to the car and before this it was fine. And yeah good i have no knock
    Uh yes you have knock, it's not major (ie <1) but it's still knocking. Just the pig rich fueling will provide extra cooling which help prevents early detonation a bit.

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    Default Re: running rich at wot

    Would probably help if you post the map you were running when you took the log. That way you can compare your targeted vs logged values.

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