Thread: Could someone help me with understanding these numbers?

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  1. #1 Could someone help me with understanding these numbers? 
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    I've read that the fuel trim in double digits it bad, as well as the knock retard I'm seeing. I've seen it hit 6.0 at WOT. This is a gtp with only a custom intake from the thread in this forum. How bad are these numbers I'm seeing? Should I be really concerned? What should I look into fixing to get these numbers better? Fuel filter/o2 sensor?

    Thanks as always guys!Screenshot_2013-03-15-19-16-13.jpg
    I'm a noob with cars sorry :/
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  2. #2 Re: Could someone help me with understanding these numbers? 
    I live here. Slick2500's Avatar
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    If your car is stock 6* of KR could be likely. When you took that screen shot was that at idle? Your fuel trims don't look to bad if it hits 16.4 and stays there that is bad. Remove the MAF reading and check timing advance instead.
    2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.
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  3. #3 Re: Could someone help me with understanding these numbers? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    That boost reading is wrong, you have to read the MAP in/hgs to see what your vacuum and boost are at.

    SMGPFC Member #1
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  4. #4 Re: Could someone help me with understanding these numbers? 
    Moderator DanPrixGTP's Avatar
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    Quote Originally Posted by slick2500 View Post
    If your car is stock 6* of KR could be likely. When you took that screen shot was that at idle? Your fuel trims don't look to bad if it hits 16.4 and stays there that is bad. Remove the MAF reading and check timing advance instead.
    Mine hits 16.4 and actually stays there.

    Just curious, but what is the cause of this, why is it bad?
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  5. #5 Re: Could someone help me with understanding these numbers? 
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    Quote Originally Posted by slick2500 View Post
    If your car is stock 6* of KR could be likely. When you took that screen shot was that at idle? Your fuel trims don't look to bad if it hits 16.4 and stays there that is bad. Remove the MAF reading and check timing advance instead.
    Slick Thanks for the input! I was honestly worried about my car after seeing these numbers lol! I have changed the MAF reading to the Timing Advance reading. What should I be checking for with these numbers?

    Quote Originally Posted by Fivefingerdeathpunch View Post
    That boost reading is wrong, you have to read the MAP in/hgs to see what your vacuum and boost are at.
    5FDP Thanks for letting me know! I knew it didn't seem correct, but what the heck do I know!? Just to be sure I'm having it read correctly I went into Settings>Units>Don't display psi as in/Hg has NO check mark in it.

    Dan I hope you get yours figured out! Your sig pic looks like you have a nice setup!

    You guys are great thanks!
    I'm a noob with cars sorry :/
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  6. #6 Re: Could someone help me with understanding these numbers? 
    GTP Level Member rperry435's Avatar
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    I assume that's the torque app I didn't know it had Kr. Never found it on the list of display options. Oh well I've got an aero force on the way

    Sent from my SPH-L710 using Tapatalk 2
    '04 CompG - 3.6MPS - 104s - FWI - TOGS - w/14"SlimFans - SLP RR' s - 180HF Stat - TEP SK - Aluminum Oil Pan - 4thGen ZZP Wires - LS7 Lifters - AeroForce - AEM WB - HPTuners - FBSS Air Ride
    ASE & State Certified Auto Electrical Tech
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  7. #7 Re: Could someone help me with understanding these numbers? 
    Moderator dsmuts's Avatar
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    Quote Originally Posted by DanPrixGTP View Post
    Mine hits 16.4 and actually stays there.

    Just curious, but what is the cause of this, why is it bad?
    Depending on whether it's + or - 16.4 you are either maxing out the fuel you can throw in your car or pulling a bunch. Yours could be from your dieing fuel pump Dan.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  8. #8 Re: Could someone help me with understanding these numbers? 
    Moderator DanPrixGTP's Avatar
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    Quote Originally Posted by dsmuts View Post
    Depending on whether it's + or - 16.4 you are either maxing out the fuel you can throw in your car or pulling a bunch. Yours could be from your dieing fuel pump Dan.
    Thats what I assumed it was from.

    Thanks Dan... The Man.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  9. #9 Re: Could someone help me with understanding these numbers? 
    Moderator dsmuts's Avatar
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    You can just call me the best Dan lol
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  10. #10 Re: Could someone help me with understanding these numbers? 
    Moderator DanPrixGTP's Avatar
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    Best Dan...
































































































    Next to me, that is.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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