CF Veteran
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The issue is not really installing the thing, it's tuning it. you would need some kind of programmable ecu to control the fuel and spark. and then somone who know what they are doing to set it up. Has anyone here done a megaquirt ECU on their XJ?
the 4.0's ECU is stupid awesome for some reason. its untuneable but with an adjustable MAP and AFC you can get it to 95% perfect. the timing adjusts itself pretty well.Originally Posted by Testament
The issue is not really installing the thing, it's tuning it. you would need some kind of programmable ecu to control the fuel and spark. and then somone who know what they are doing to set it up. Has anyone here done a megaquirt ECU on their XJ?
Newbie
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Really? that surprises me, especially about the timing. Have you got some details on this setup? I'm not sure I know what you mean when you say adjustable MAP, I know what a MAP sensor is but i have never heard of an adjustable one - the AFC I presume is some kind off piggyback computer that adjusts the fueling.Originally Posted by 93XJLI
the 4.0's ECU is stupid awesome for some reason. its untuneable but with an adjustable MAP and AFC you can get it to 95% perfect. the timing adjusts itself pretty well.
Do the standard injectors have enough extra flow?