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How did the engine run with the carb setup prior to going back to fuel injection? This is the problem with computer run engines. Whenever you change something like configuration or cut wires, they rarely run good. It sounds like you have issues with fuel delivery to the engine (fuel squirting out?) that is not suppose to happen! or possibly even problems with the injectors. A cam will usually cause the engine to require more fuel not less to the point it causes a flooding or a running rich condition as you state. The computer also regulates timing, which most likely sounds is off with a new cam and a change of heads, etc. You need to check the specs on the cam to see what the recommended degree of timing is for that cam. You can't just put a cam in and be done with it. I would start there and try to re-time the engine and see if that helps. On some engines, the timing is real touchy to adjust as well. If it's a computer issue, you may want to go to a place that can test and adjust your computer to work with your configuration. It's not cheap, because it takes time to all that, but sometimes to save time and aggrevation, it's worth it. Or... get rid of the computer altogether and go back to running a intake and carb set up, if that ran OK.
 
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