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Thread: 14 gt,boss intake, jlt good starting point ?

  1. #21
    Quote Originally Posted by k8busa View Post
    Got the car done and turned out awesome ! With the boss intake, jlt cai, and just borla mufflers final numbers were 413,418,414whp last 3 pulls in a row. Makes power all the way to 7900, driveabilty is perfect !
    what was final timing? I usually can squeeze in 25-26 degrees in them. good numbers with cats!!

  2. #22
    I made with C&L around 417 and 28-29 timing 93 octane, also with cats, but i don't know what mufflers were there.
    Eastern and Central Europe American Muscle and Harley-Davidson tuning
    www.hd-customs.pl
    http://www.facebook.com/hdcustomspl

  3. #23
    Senior Tuner
    Join Date
    May 2016
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    1,134
    I don't know if it's that there's a bunch of random things that can cause extra noise on these cars or if engine to engine makes a difference but I've tuned very similar cars and seen one take 28-29 and one only around 26 with the same fuel in the same conditions. We tested back to back to do a fair comparison.

  4. #24
    Yes, that's truth. More differences i see in 2015 5.0, from 22 degrees to 29.
    Eastern and Central Europe American Muscle and Harley-Davidson tuning
    www.hd-customs.pl
    http://www.facebook.com/hdcustomspl

  5. #25
    Senior Tuner
    Join Date
    May 2016
    Posts
    1,134
    What kind of gains per degree of timing do you guys typically see in the 25 range on these cars? I don't have access to a dyno and have never really seen someone post this information on these engines. I've never really thought to try with VirtualDyno because I've only tuned 11-12 cars and can't get them to run on E85 so had a reason to test it.

  6. #26
    Great info