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Thread: My Car Thinks Stoich is 15:1

  1. #31
    Lifetime Member mr.prick's Avatar
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    Analog is a little shakey compared to serial so don't sweat it too much.



    Shawn, is AFR richer when in the overdrive gears?
    I stay in fourth gear when doing WOT pulls.
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  2. #32
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    Mr. Prick I have seen AFR vary per gear..normally my 4th gear (M6) is .1-.3 leaner at lower RPM's and by 4000 Rpms is within +/- .1-2.

    But, like you I stay out of overdrive gears..1st & 2nd occur too fast..3rd (M6) is where I do a lot of tuning..I can keep my Rpms and speeds somewhat sane.

    My AFR problems tend to come at Rpm's below 3200. If the airmass (esp MAF) has too low of a frequency for the Rpm..you can see the resultant IBPW is 'too low' Same if I get any pinging or KR..Lower MAF=lower airmass..not enough fuel.

    But, to directly answer your question I stay out of overdrive gears for the most part. 3rd is my main tuning gear..With the 3.90 gears I can do a 40-95 mph pull pretty quick..and stay within 25 mph of the speed limit.

    Disclaimer..Don't try this at home. For off-road use only..



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  3. #33
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    I can't see any harm in trying 14.7 in {B3601}, but I'm out of town for a week and so no logging. But I can continue to work on ideas to try to isolate the problem.

    I have V1 and I presume there's no way to connect a serial cable to it. Right?

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