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Thread: EFI dilemma

  1. #21
    Registered Member races14's Avatar
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    Mar 2013

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    I thought I might as well throw in my useless knowledge. I am running the HP EFI and found it to be extremely easy to tune. I was able to download
    the V4 version and study it and just get used to where things were. You could do this and maybe see where the difference are between the 950 and the HP EFI. If you haven't been to the resources site on Holley https://www.holley.com/support/resources/, this is where I found a lot of useful information.

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    Allen & Linda McEntire

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  2. #22
    Registered Member chevynut's Avatar
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    Thanks Allen, I already read a lot of stuff on that Holley link. I know the HP EFI is a lot better than the C950 but the C950 has been used by thousands, if not tens of thousands of guys. Sure, I read that the C950 can be a PITA to tune, but I'm sure those same guys would bitch about any EFI system that doesn't learn by itself. And like I said, the HP EFI has a lot of features that are useless to me. I found out that it DOES have a fan controller in it that would eliminate my need to buy a DD PAC-2750 but that's not enough incentive.

    The real question is GIVEN THAT I ALREADY HAVE A C950, is it worth $1700 to upgrade? I have a hard time believing it is. And it will again delay a project I've been working on WAY too long already.

    Thanks for all the input guys. I bought the Holley WBO2 setup because I was told it would make tuning a lot easier, and it cost a few hundred bucks for that upgrade. I guess I'm sticking with the C950 unless I just can't get the engine to run the way I want down the line. If it comes to that, I'll yank it out and upgrade someday.
    Last edited by chevynut; 07-29-2017 at 05:04 PM.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension

    You can see my 56 Nomad build here http://www.picturetrail.com/chevynut

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  3. #23
    Registered Member OLKY55's Avatar
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    May 2013

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    I have 2 cars with the Holley HP system. It was pretty easy to install and learn. There are several forums that are pretty helpful, if you have questions.

    My 57 will have the Dominator system, as it has DBW and an integral trans controller for my 4L80.
    1955 2D HT, 1957 2D Sedan, 2004 Z06 Corvette, http://s1070.photobucket.com/user/OL...?sort=3&page=0

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