I agree with Georgia Diesel. EFI Live is going to be a huge waste of money if your father in law just wants to 'set it and forget it'. It's powerful but it's too much for 95% of people.
I was really impressed with the two Duramax trucks I ordered PPE programmers for. I have installed countless Edge Juice modules on them as well with good results. If he's interested in a digital gauge and a nearly rock-solid platform, the Juice/Attitude would be a good choice. However, the performance will not be nearly as noticeable as with the programmer but a pyrometer will be a mandatory additional expense.
Good luck!
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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