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Thread: MAF Calibration (No Spreadsheets!)

  1. #41
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    what's this pit stop in excel. ??

  2. #42
    Lifetime Member SSpdDmon's Avatar
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    I set up a spread sheet so that I could apply a percentage of the correction and not the whole correction. Shoot me an email to SAJ79 at aol dot com and I'll send you the sheet if you want. It might be a few days til I get to it though...it's on the other computer.

  3. #43
    Lifetime Member Beer99C5's Avatar
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    I am using earlier logs, and just dabbling (stuck offshore)...
    Thanks to TAQuickness for showing me the trick of being able to add calc PIDS if you happened to log the parameters needed for it AFTER the FACT

    OK, does this look right?



    So I would do something like this to modify the MAF FREQ table when I have enough samples...This is halfing the Ben Difference per SSpdDmon



    I would apply the new values and relog til I was satisfied...
    1999 C5 A-4 Convertible
    1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.


    Maine USA



  4. #44
    Lifetime Member Bruce Melton's Avatar
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    Beer,
    There are three things you may encounter:

    * The MAP col label 8000 will prevent you from direct copy with labels. Using "Value" instead allows paste with labels.

    * There is currently a 64 row limit for MAPs which is an issue for 12k MAFs

    * My experience has been that adding the MAF back into an optimized VE MAFless tune tends to lean out AFRs.

    Let us know how it works out?

    2000 C5 Coupe, 6M, Callies/Mahle stroked LS7 (441), Blackwing, Halltech, LS3 intake, 90mm Shaner TB, ported L92 heads, FAST 50# inj, not too much cam, Kooks 1 7/8" headers , 3" catless mid pipes, Z TIs, track suspension, , 3:90 rear, EFI V2, LM-2, etc.
    PowrMax Performance

    100 mm PowrMAF

    LM-2 EFILIve package with TAQ -sLM2 V-2 serial cable> Package deals

  5. #45
    Lifetime Member SSpdDmon's Avatar
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    One other thing to be careful about...

    Make sure you have enough resolution on your log. 7.2 and 7.24389 are two totally different numbers when it comes to the MAF. Other than that, it looks like you're on the right track.

  6. #46
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    No matter the precision you see the software always copies out to 6 or so decimal places. This can be verified by copying and pastign in Excel
    EFILive - The Single version of the Truth

    Larry - HumpinSS

  7. #47
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by Bruce Melton
    ...
    * There is currently a 64 row limit for MAPs which is an issue for 12k MAFs
    ...
    Top get the required 85 rows, you have to use the Create Labels button, and specify start 1500, stop 12000, step 125.

  8. #48
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    Quote Originally Posted by joecar
    Top get the required 85 rows, you have to use the Create Labels button, and specify start 1500, stop 12000, step 125.


    And everytime you edit that map you will have to re-create the rows
    EFILive - The Single version of the Truth

    Larry - HumpinSS

  9. #49
    Lifetime Member Beer99C5's Avatar
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    Thanks for the additional info guys, I get paroled Thursday, have a short two weeks home, and the driving season is drawing to a close in New England. I got 42's # injectors to put in and I am gonna play with the VE tune then roll into this MAF tuning (need the MAF for dry Nitrous).

    With any luck I will have that done and get the opportunity to see what the tuning did N/A on the dyno and then get some dry nitrous dyno's/logging above the 50 shot I was limited to before I put the car up for the season.

    Thanks for the help will post my results
    1999 C5 A-4 Convertible
    1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.


    Maine USA



  10. #50
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    Could someone host that .map file? Those attachment links don't work.

    ...when I try and download it, I end up downloading attachment.php.

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