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Can a Carb be tuned close to fuel injection? Crossfire pissing me off.

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  • #1

    Can a Carb be tuned close to fuel injection? Crossfire pissing me off.

    So I got this all original 82 Vette with Crossfire injection. It is really pissing me off. It has a new CTS sensor, TBI's have been cleaned and rebuilt with a new TPS sensor. The timing has been set and is very close. The problem I am having is it is flooding like a mother and I have no clue why. I have been on the crossfire site and they dont know either. Sooooo I am starting to think that carbing it is the way to go. The excuse on the cross fire forum is the mileage I will lose but I have heard different that you can tune a carb close to fuel injection. Hell I could have bought an intake for what I got in the new TBI set up, then a carb, and dizzy and done. Plus I really want to gut all the smog BS and slap some headers on it. It runs fantastic for a second or two till the motor floods. Pull the fuel pump fuse and it fires up and runs for about 15 seconds and sounds great. Car only has 82k on it, it is a damn shame I can not figure this thing out.

    Any suggestions? I know some of you guys are Chevy gurus.
    Whos your Daddy?
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  • #2
    One of the lemons teams battled the crossfire to no avail. They went carb, and so should you.
    "If I asked people what they wanted, they would have said faster horses." - Henry Ford

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    • #3
      Whats bad is that I had a 84 Vette that ran flawless for years. I got a computer coming tommorrow that I was told I could try out but I am really getting sick of it. It appears to be a simple system but it owns me right now. I heard the only bad thing is setting up the 700R4 with the carb. I have also heard they will pull a lot harder on the top end with a carb set up. I bet I could sell all this x fire stuff and still come out ahead.

      Whos your Daddy?

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      • #4
        fprs?
        Ring and pinion specialist

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        • #5
          Fuel pressure regulator I am assuming??? Yes I have heard this could cause and issue but havent messed with it yet. My guage in the middle reads 12 PSI at idle when it will run but not sure if that would change or not. To be honest I am not 100 percent sure this thing has one. I think you adjust fuel preasure thru the TBI's.
          Whos your Daddy?

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          • #6
            Originally posted by kingjason View Post
            Fuel pressure regulator I am assuming??? Yes I have heard this could cause and issue but havent messed with it yet. My guage in the middle reads 12 PSI at idle when it will run but not sure if that would change or not. To be honest I am not 100 percent sure this thing has one. I think you adjust fuel preasure thru the TBI's.
            fprs are in the top of the tbi units
            Ring and pinion specialist

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            • #7
              Yes the preasure looks good on them. They came off a well running car and right onto mine. My old set up was doing the same thing so its got to be something else.
              Whos your Daddy?

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              • #8
                Map sensor, or lines going to it??? What kind of manifold vacuum do you have, if you can get it to run long enough to check??

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                • #9
                  The bitch lives..... Picked up a new computer today thinking ehh why not since they are cheap. Well low and behold it had a picture of how the chip goes in and some dipwad had put the factory one in backwards at some point. So I stabbed the hypertech in the new comp the right way and the injectors started firing right. Screwed with the timing some and Bam fired right up. Kind of makes you wonder what happened first, the timing, the chip, or the blade in the fuse panel causing the back injector not to fire. Runs great, temp was steady, oil psi was great and no smoke. Hell even got the power locks and dome light working. Today was a good day.
                  Last edited by kingjason; 01-27-2011, 07:38 PM.
                  Whos your Daddy?

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                  • #10
                    Cease Fire injection sucks. That's what it should be called. Talisman's Sunbird that he had years ago blew away a cease fire injected Firebird. That was pretty funny, especially since the guy with the Firebird thought it was the fastest car ever.

                    CN

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                    • #11
                      LOL I am not worried about speed right now I bought the car because it is one of my all time favorite body styles. Just wanted to get it up and running good and then start working on the brakes, paint, then carpet, then get back to the HP. Its a light car and should respond well to small gains. There is a guy on the crossfire forum pushing over 400 with the system. They have come a long way with cross fire stuff since I had my 84 ten years ago. Hell one guy even supercharged a crossfire system and had it working well but I can not remember the numbers he had.
                      Last edited by kingjason; 01-30-2011, 09:43 AM.
                      Whos your Daddy?

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                      • #12
                        can you bolt carbs on those manifolds? Looks like a max wedge setup that way.

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