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Thread: at 1.20g/cyl at 4400 I have -2* timing

  1. 07-04-2004 #1
    mustbbrent
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    at 1.20g/cyl at 4400 I have -2* timing

    Ok, please help me here.

    The IAT is definitely getting north towards 200*, but it is RICH at WOT and timing knock retard wants to pull the engine timing below -2* around 4400rpm and WOT is 1.20g/cyl.... what gives?

    I must be doing something wrong. Part throttle tuning even 95%TPS, intake temps don't get that high and timing stays near 15* with no knock retard.

    Any ideas without purchasing a Wideband ?
    Because it must be Brent!&&\'05 FORD F-250 Diesel, baby
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  2. 07-08-2004 #2
    WS6_GreeN
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    Re: at 1.20g/cyl at 4400 I have -2* timing

    How do you know you're running rich? Did you average your FTC 22 O2 sensor readings? If so, what did they average out to be? What are your part-throttle LTFTs?
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  3. 07-09-2004 #3
    jimmyblue
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    Re: at 1.20g/cyl at 4400 I have -2* timing

    I thought NA WOT CylAir values were normally about
    0.75 g/cyl? Is this a boosted vehicle?
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  4. 07-09-2004 #4
    SSBerserker
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    Re: at 1.20g/cyl at 4400 I have -2* timing

    Quote Originally Posted by jimmyblue
    I thought NA WOT CylAir values were normally about
    0.75 g/cyl? Is this a boosted vehicle?

    Yes, Jimmyblue -- Brent is tuning for 10psi of boost (correct me if I am out of date B).
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