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Old 05-14-2019, 12:47 AM
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I have a 2003 f150 4.6. What's the best programmer for my truck that gets the best hp.
Old 05-14-2019, 02:57 PM
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None.

These engines just don't have the tuneability of newer trucks.

Tuners can help with transmission shift points and firmness, and can allow to adjust tire size.
If you go with a 93 octane tune with a good trans program, it can add a little more pep, but again, nothing like the '04+ motors. Plus you have the 4.6, which responds even less to a tune.

Last edited by blupupher; 05-14-2019 at 03:01 PM.
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Old 05-15-2019, 07:39 AM
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Originally Posted by blupupher
None.

These engines just don't have the tuneability of newer trucks.

Tuners can help with transmission shift points and firmness, and can allow to adjust tire size.
If you go with a 93 octane tune with a good trans program, it can add a little more pep, but again, nothing like the '04+ motors. Plus you have the 4.6, which responds even less to a tune.
Agree with everything you said
Old 05-15-2019, 03:28 PM
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Yep. I wanted a tuner only so I could get my speedo to be correct for my larger tires, but instead of a few hundred for a tuner, I've been contemplating spending $2300 on gears... for over a year now.
Old 05-16-2019, 07:09 AM
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Originally Posted by OhioLariat
Yep. I wanted a tuner only so I could get my speedo to be correct for my larger tires, but instead of a few hundred for a tuner, I've been contemplating spending $2300 on gears... for over a year now.
$2300 for gears?

Seems pricey?
Old 05-16-2019, 07:31 AM
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Front and rear, Ford gear for the rear, full rebuild kits, installed.
Old 05-16-2019, 03:17 PM
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Originally Posted by decalbomb777
$2300 for gears?

Seems pricey?
$800-1200 per axle is normal price depending on location.



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