does it need retuned

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06-30-2008, 02:58 PM

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Thread Starter

Join Date: Nov 2007

Posts: 24

does it need retuned

Need some advice. I have a 1996 GT that I'm repowering with 2004 4.6 L PI. Do I need to have it retuned or is the tune up for the 96 PI engine good enoug.h

06-30-2008, 05:53 PM

Sxynerd

6th Gear Member

Join Date: Feb 2006

Location: Virginia

Posts: 11,786

RE: does it need retuned

You'll be fine to drive it for now. You'll get better performance, HP and MPG from the PI fuel maps and a custom tune. After I did the same thing I went from 17-18mpg to 28mpg and 265rwhp