Power Hungry Performance Forum - Tuning a 4.6 computer for a 5.4?

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- - Tuning a 4.6 computer for a 5.4? (http://forum.gopowerhungry.com/showthread.php?t=6784)

demontang

Thu, July 7th, 2011 11:21 PM

Tuning a 4.6 computer for a 5.4?

So I've been doing a lot of looking and I'm unsure what I can do. I have a 97 expedition with a 99 5.4 that someone put in. It has the 4r70w trans still and the 4.6 coil packs. It runs pretty good but I get random codes and it has a miss off and on. I want to get a 5.4 harness with cop. Can I tune the 4.6 computer or do I need to snag a 99+ 5.4 4r70w computer and have the pats turned off??

88Racing

Fri, July 8th, 2011 09:26 AM

You might want to try and get a hold of Bill next week to answer your questions or there's some threads on this subject over on F150online

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