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What should I tune on my 7.3?

4889 Views 15 Replies 9 Participants Last post by  AgTires4295
Hey Guys!

I just picked up a '99 F-250, with only 170 miles on a 7.3L diesel, regular cab, eight foot box.

I've done a K&N cold air intake on it already. What else can I do to get more horsepower and torque?

-Magnaflow exhaust?
-Ramping, stacking the CPU?
-I wanna keep the stock injectors.

I want the truck to operate more effortlessly, smooth, and free flowing.
I still wanna keep good fuel mileage.
By the way, I haul a thousand pound welder in the box all the time.

Welder Dude.
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Why will a K&N cold air intake ruin my truck?
What does a DIY intake do that's better?

For guages, Banks for turbo boost, trans, what else?

What brand of high pressure oil and fuel crossover lines do you guys recommend?

A four or five inch exhaust? What brand?

You guys know so much, thanks for all the help, much appreciated!
Check out this write-up:

It's non-biased and would be informative to your situation since you just bought your CAI. You "should" consider switching over to another filter (I use the K&N tube with a 6637 attached at the end. Fits perfectly). You can keep the K&N setup, but lose the filter. It's not a total loss.

Here's a link to show my setup:

K&N pipe/6637 filter. Everything fits together perfectly.
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