Changes to the 7.3
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FTE Leadership Emeritus
Joined: Sep 2003
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From: Houston, Texas
Changes to the 7.3
About two weeks ago I went and test drove a slightly used 2003 7.3 powered X. One thing I noticed was how quiet the interior was with the diesel. If I didn't know any better I could have sworn it was a 6.0. The acceleration was much better, and it shifted oh so smoothly. To be honest, I was a little surprised. My 01 X (bought new) didn't even drive like that. I know for a fact that in 2002 the 7.3 specs were 250HP and 525 Ft/Ibs of torque. But my question is: what else did they do to it? I've read about people pulling 19 and 20 mpg on the freeway at 75. If I tried to do that I'd probably end up getting about 14-15 mpg. Although I could be wrong. All the same, what did Ford and/or International do to the 7.3 In late 2001 and/or early 2002?
Logistics Pro
Joined: Nov 2002
Posts: 4,788
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From: Mansfield, TX USA
Between the turbo and the muffler.
On the underside of my hood, Ford put a white sticker that says "Non-Cat. . . "
If you have a cat, I bet your white sticker says "Cat....".
I don't know that Ford did anything in 2003. At least, the HP and torque was not changed. Ford has continually tweaked the ECM programming. Maybe they finally got it just right in 2003?
Like I said, I know that my '03 has 20 HP and 25 ft./lbs. more torque than my '99, but my X weighs 2000 lbs. more also. No way it should feel so much faster, especially when it is quieter to boot.
It could just be me. I never timed either of them.
On the underside of my hood, Ford put a white sticker that says "Non-Cat. . . "
If you have a cat, I bet your white sticker says "Cat....".
I don't know that Ford did anything in 2003. At least, the HP and torque was not changed. Ford has continually tweaked the ECM programming. Maybe they finally got it just right in 2003?
Like I said, I know that my '03 has 20 HP and 25 ft./lbs. more torque than my '99, but my X weighs 2000 lbs. more also. No way it should feel so much faster, especially when it is quieter to boot.
It could just be me. I never timed either of them.
Laughing Gas
Joined: May 2003
Posts: 1,136
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From: Scenic Wisconsin
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FTE Leadership Emeritus
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From: Houston, Texas
Originally posted by oppy
The 6-speeds are rated at 275, autos were 250.
The 6-speeds are rated at 275, autos were 250.
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FTE Leadership Emeritus
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From: Houston, Texas
Originally posted by jschira
Between the turbo and the muffler.
On the underside of my hood, Ford put a white sticker that says "Non-Cat. . . "
If you have a cat, I bet your white sticker says "Cat....".
Between the turbo and the muffler.
On the underside of my hood, Ford put a white sticker that says "Non-Cat. . . "
If you have a cat, I bet your white sticker says "Cat....".
Laughing Gas
Joined: May 2003
Posts: 1,136
Likes: 1
From: Scenic Wisconsin
I haven't gotten around to doing this, but I have seen numerous posts about how much better they run without the cat. I'd just rip the whole thing out and replace the pipe and muffler, or go with a whole new system.
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