Results 1 to 4 of 4

Thread: SOI Theory Exercise

  1. #1
    Tuner evolmotorsprt's Avatar
    Join Date
    Aug 2018
    Location
    Salt Lake
    Posts
    71

    SOI Theory Exercise

    In order to form a better mental picture of these DI injection timing limits I put together a graphic to show how it falls within a couple crank rotations. I'm hoping for some input to correct my mistakes and educate myself and others. All of this is based off a stock tune from a 2017 Camaro SS 6.2 LT1

    I was able to find the cam specs, but had trouble determining the ICL and lift at .006". What I found was the cam is parked +7deg advanced and has a 116.5deg LSA. For these calculations I assumed the parked ICL is 109.5. Another question I had was regarding the relationship of the "intake cam angle" in the tune to crank degrees, i.e. does 9 in the table equate to 18deg at the crank?

    Inj timing.PNG
    Last edited by evolmotorsprt; 1 Day Ago at 09:39 PM.

  2. #2
    Tuner
    Join Date
    Dec 2015
    Location
    Miami,Fl.
    Posts
    189
    360 max when the cams retarded at about 8/9 degrees. No earlier than 350 everywhere else.

    Any reason in particular you're trying to spray earlier than stock?
    2019 C7 ZO6 M7.

  3. #3
    Senior Tuner Higgs Boson's Avatar
    Join Date
    Mar 2010
    Location
    Texas Hill Country
    Posts
    3,248
    set the whole table to 280 and log some data

  4. #4
    Tuner evolmotorsprt's Avatar
    Join Date
    Aug 2018
    Location
    Salt Lake
    Posts
    71
    Quote Originally Posted by HeavyChevy305 View Post
    360 max when the cams retarded at about 8/9 degrees. No earlier than 350 everywhere else.

    Any reason in particular you're trying to spray earlier than stock?
    Quote Originally Posted by Higgs Boson View Post
    set the whole table to 280 and log some data
    I bit the bullet and bought the Calibrated Success Gen V series. I'd recommend it to anyone struggling with connecting the dots on this platform.
    Last edited by evolmotorsprt; 1 Day Ago at 09:38 PM.