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Thread: Corvette CCM Reverse Engineering Anyone?

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  1. #1
    Fuel Injected! -=Jeff=-'s Avatar
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    Quote Originally Posted by NomakeWan View Post
    That's very strange indeed. All the code in the car itself uses metric measurements for temperatures, and I have confirmed via the ADX files for 1990-1996 that the equation never changed from 1990, which was "Count x 0.75 - 40 = Deg C". In fact, if you test my original unaltered code in your car you can confirm this for yourself.

    My code was originally designed as a proof-of-concept to allow someone to make the CCM happy while spoofing the coolant temp. If you set the coolant temp value in my code to CD (205 counts), the dash should display 236.75F (I forget if it rounds up or down). This is because 205 x 0.75 - 40 = 113.75C, which is 236.75F.
    I totally agree with you. It confused the hell out of me. I had it, I checked it 2 or 3 times. it should have worked that way for for some weird unknown reason it is not that way. Like I said I was checking it with my IR temp gun too, I will look at the code again just to be sure I am not going crazy, but it looks to be the 'wrong' way
    -=Jeff=-
    1990 Corvette ZR-1
    Black/Red Interior

  2. #2
    Fuel Injected! -=Jeff=-'s Avatar
    Join Date
    Jun 2013
    Location
    Chicago Suburbs
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    Posts
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    I think I know where I might have gone wrong. I am going to look at my code tonight
    -=Jeff=-
    1990 Corvette ZR-1
    Black/Red Interior

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