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    4.6 3V to 5.4 4V engine swap DTC’s - need help!

    I actually thought I had it all figured out. The car is running, and sounds great Went to the dyno yesterday (HPP Motorsports) Mods: VMP Gen2r Twin 67mm TB VMP heat exchanger w/fans Fluidyne Triple core radiator Kooks Long tubes and X pipe Innovations 10% lower VMP 2.4 upper 123mm JLT...
  2. 0

    4.6 3V to 5.4 4V engine swap DTC’s - need help!

    Hey I'm in the middle of the same swap Differences are it's a 2006 I used stock GT computer, gt500 motor and gt500 engine harness, and I'm running into power issues, I've been told to go back to 06 engine harness, I've also read online the 06 computer wont run the 5.4, so not sure which route...

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