High Milage powerstroke

[JamesJcbM]

Hello all,
I have a 01 F 350 7.3 power stroke, i bought off my dad with 394k miles and it is about to turn over 400k, he was quite anal about his fluid changes and maintenance and the truck runs like a top.
However all my friends keeps talking about all these mods, such as the BB fuel mod and the DIY cold air intake with a piece of tubing, however my old man keeps telling me, "don't fix something that is not broken" So my question is; is it safe to do any mods like these to try to increase performance and fuel mileage.
(I do have a superchip installed that has been the life of the engine.)
Thanks for any advice

[usnavyad]

get rid of the superchip cost you money in long run never heard of bb fuel mod but you def can do tymar intake with zoodad and be good to go more air will not harm the 7.3l, but if you are doing more id say do exhaust as well at least take the muffler off. More air in but less out hmmmm you see what im saying also it would be smart to invest in gauges with that tuner id be scared to have superchips on my truck

[Heathrm]

The BB fuel mod is for the 6.0. At least there are some people doing a bb mod on the 6.0. I don't know if there is something out there for the 7.3. The BB is used to increase fuel pressure, there is a new updated spring that does this also.

[Galaxie]

I agree with your father. But at the same time, you can never go wrong with a better exhaust and better intake (well on a 7.3).

[Super Diesel]

Intake and exhaust won't hurt it. But I would definitely leave the truck mostly stock. Sounds like you've got a great running truck. Treat her nice and she'll treat you nicer.

[Buffalo444]

bb fuel mod = fpr shim

[audiocontr]

Originally Posted by usnavyad

get rid of the superchip cost you money in long run never heard of bb fuel mod but you def can do tymar intake with zoodad and be good to go more air will not harm the 7.3l, but if you are doing more id say do exhaust as well at least take the muffler off. More air in but less out hmmmm you see what im saying also it would be smart to invest in gauges with that tuner id be scared to have superchips on my truck

1) How will the superchip cost him in the long run?? The LONG run? The truck has 400k miles on it and had the superchip its whole life, sure seems like the superchips tuner did pretty damn well, don't ya think?

2) the BB mod increases the closing force of the fuel pressure regulator. A 400k mile truck probably has a weak spring, however, it most likely has a weak fuel pump as well. If you do the BB mod, be prepared to do the fuel pump mod (i.e. replace the fuel pump)

3) The stock intake and exhaust have quite a bit of flow stock. Its only when we are constantly towing heavy loads or increasing horsepower via fuel and timing (a new tuner) that we see considerable gains. You're fooling yourself if you think you can feel the difference in normal daily driving. Its louder... sure, but louder doesnt equal more power. As is, i would NOT zoodad, tymar, nor replace the exhaust unless you plan on running more aggressive tuning. I would not recommend more aggressive tuning on a 400k mile truck. You will not see an increase in fuel mileage and you may actually lose power.

4) The only thing i do agree with is gauges. They cant hurt. Gauges first, check EGT and boost. If EGTs are high, then and only then mess with the intake and exhaust. if boost is low, check for leaks and uppipes.

5) I'd be scared to have you drive my truck


So to the original poster, take these opinions with a huge grain of salt, especially Shawn's. This forum is full of regurgitated "facts" that have nothing to back them up. You have a strong, reliable truck. Leave it that way.

Your job is to make sure the truck is healthy first - Check fuel pressure, make sure there are no codes, check for boost leaks, check for a clogged exhaust sensor. Check your brakes for proper functionality. Beyond that, dont touch a thing unless you are ready to RAPIDLY decrease your reliability.

[audiocontr]

Originally Posted by Galaxie

I agree with your father. But at the same time, you can never go wrong with a better exhaust and better intake (well on a 7.3).

If you're sharing... I'll take the woman on the upper left!

[mattdoxa]

i thaught the bb mod was for the OBS? the 6.0 is an upgraded fpr spring.. as far as i know neather one applies to sd 7.3

[audiocontr]

BB mod is on a 7.3 as well, but i have not seen any benefit. better method is to check fuel pressure with a gauge first and decide if its needed.