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Thread: 408 on the dyno friday

  1. #11
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    I agree with quik, throw the maf away and get a speed density tune. If you plan on the turbo, why waste the money finding a bigger maf? Turbos require an SD tune. SD tunes on non turbo/sc vehicles is an option that some prefer due to possible restrictions by the maf.
    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
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    1976 Corvette Stingray: Trying to save it, progress is slow.

    ^Ricky's Sweet PS Skilz
    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

  2. #12
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    IIRC, Flaco does tons of MAF tunes on turbo trucks using a card type sensor. Mine is done SD but thats just how my tuner prefers to handle the tune.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #13
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    dont forget that no matter what maf you have on a GMT800 truck the PCM is hard data at a set value. nothing is gained past that point then you use a half breed tune of maf/sd

    on the GMT900 trucks its totally different
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
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    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

  4. #14
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    Quote Originally Posted by Quik View Post
    dont forget that no matter what maf you have on a GMT800 truck the PCM is hard data at a set value. nothing is gained past that point then you use a half breed tune of maf/sd

    on the GMT900 trucks its totally different
    Can you explain the differences and how it works? I understand that the OS on the GMT900 is 3bar capable from what I've read. I also hear the MAF is good to much higher levels than the GMT800 one. In your opinion, what would be the best way to tune a NNBS turbo truck? I know Greg is full on SD, but I've read about a lot of the Vette and Camaro guys using the MAF.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
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  5. #15
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    Quote Originally Posted by RedHeartbeat View Post
    IIRC, Flaco does tons of MAF tunes on turbo trucks using a card type sensor.
    Can you elaborate further on this method, never heard about it?
    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
    2013 GMC Acadia: SLT1 Carbon Black
    1976 Corvette Stingray: Trying to save it, progress is slow.

    ^Ricky's Sweet PS Skilz
    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

  6. #16
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    Maybe Flaco will see this thread and reply. He has all the details on what and how he does it. He has some of the fastest trucks in the south so I can definitely trust his opinion. I believe he puts a C6 Corvette card type MAF sensor in a 4" tube and tunes it.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  7. #17
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    Greg, I emailed Flaco about it and this was his reply

    "I use the cobalt map sensor. And the stock maff. We made 1001rwhp on one of my customers 370 with a stock intake and maff."

    I seem to remember this build being posted on this site at some point.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  8. #18
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    Really? Maybe he has changed his method. I too emailed him a while back and his response was to use the card type MAF sensor. I guess we all evolve as we learn life's lessons. When did you email him, mine was after I installed the STS kit and needed help with getting the tune right.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  9. #19
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    I emailed him after I spoke with you via email. I asked if he was using the LS7 style MAF like others had and he said stock, so ....

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  10. #20
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    Cool, I'd like to know what OS he's got a 2.5 bar tune for. I'd really like to be able to tune for 20+ PSI.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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