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Thread: A48 vs a63

  1. #1
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    A48 vs a63

    Does anyone have a copy of the a48 fuel curve? I'd like the have a table to compare it to a a6 fuel curve. Thanks
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

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    Your title says A48 vs A 63. But you're asking about the A6? While I don't have the Curve parameters I can provide you some input. The A 48 and A 63 were both 11350 Digital ECU's that had removable chips. The A 48 has a 39 psi fuel curve with a 11500 RPM limit and the A 63 has a 56 Psi fuel curve also with a 11500 RPM limit. When the 11350's were phased out and the 849849 introduced. The 849849 series superseded the 11350 series, and features a thinner ECU, different tester connector, enrichment moved from front to back of box, ECU chips are potted and cannot be removed.

    The 849849 A6 Superseded the 11350 A63 as both have a 56 psi fuel curve and a 11500 RPM limit. The difference Ive noticed in the boxes is the A48 is a Much safer Box to Run especially for River Rockets where some mid range cruising will be done as the Mid range curve is fatter than the A63 and A6. In comparison to the A63 and A6 they are extremely close in Curves except the A6 has a Leaner curve at Mid range and shouldn't be run for long periods in Mid range.

    Hopefully others more knowledgeable than Me will chime in.
    Bud Conner "Heathen" "Defending Our Constitution"

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  3. #3
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    A6 and a63. Is the same curve. I have 849 style boxes and the programming software. I've built my own custom. Svs curves. Based off a a13. I wanted to use a a48 base for a project I'm working on but have never seen a a48 curve to compare with the a6. Thank u for your help
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

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    I'm guessing it's only a few numbers different in the middle.
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

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    The numbers on your mercprom will be way different because one is for 39 psi and one for 56. Do you have an A1 or A5 map
    Erik Kiser

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    I don't. Just a13 and a6. Gore said he had a a8. I might give that a try
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

  7. #7
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    email sent
    81' HYDROSTREAM VECTOR / slightly Modified 200
    before and after:http://www.screamandfly.com/showthre...inished!/page3

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    Quote Originally Posted by bigbluechevy454 View Post
    I don't. Just a13 and a6. Gore said he had a a8. I might give that a try
    I'll text you screenshots of the A1 or A5 in a bit
    Erik Kiser

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    Ok thanks
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

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    After looking at the Brucato version of a48 and a63. There is not difference between the curve except the correction for fuel pressurer Maybe merc is different and his isn't a exact copy
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

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  12. #11
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    Thank you
    Nitrous is like a slut. u wanna hit it but you know there will be consequences.

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