Digital Tuning Gt Tuning

[lwright]

I have a stock (including - computer and wiring harness) 2003 mustang GT with a newly rebuilt all stock (including - intake manifold) 2001 5.4L SOHC ford expedition engine.


I am going to order a SCT X4 tuner so I can at least make sure my air/fuel mixture is correct until I can afford to have it dynoed. Given that I cannot use “CANNED TUNES” for the SCT X4 tuner for the 2003 mustang GT as it is a 4.6l SOHC, should I order one pre-loaded with tunes for the a 2003 f150 lightning 5.4L SOHC just for kicks because pre-loading it with tunes for a 2003 mustang GT 4.6l SOHC would just be a waste.


I THANK YOU in advance for any help you can provide!

 

[88CougarMan]

Do you have a reputable speed shop around? I'd have that tuned on a dyno.

 

[mogs01gt]

You shouldnt need to tune anything. Just get exhaust made and it will run. The 5.4 is just a 4.6 with a longer stroke(block has a taller deck height)


The tune for a Lightning engine wont work on a stock 5.4l. Remember the L's had a blower attached to them.