Join Date: Feb 2010
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Bought a 2001 F350 dully 7.3 diesel longbed it's primary job will be to pull my 27' pocket cabin cruiser. 8000.00 pounds, with supplies/fuel/? maybe add 2000.00 . Other jobs will be done of course.
Looks almost off the showroom new, already has big exhaust. Owner said it had upgraded fuel injectors modified to add 40 horse power "can't check that".
But I have found problems. The up-pipes are leaking and will need to be fixed. no boost at all cruising at highway speeds and exhaust temperature is 800 degrees unloaded on the highway. Step on it and it rises rapidly to 1200. Boost will go to 23 when in it hard. Turbo probably not producing at low speed because of leaks.
When I go after the leaks I will check the turbo and if I find problems will probably upgrade the turbo, question is which one? or just add upgrade housings to the one I have. I would like a good improvement in efficiency around town unloaded and of course power to tow.
After the supercharging system is fixed will probably add a DP Tuner but I wonder if there is a flash programmer that has as good a set of tunes? I don't really need 16 tunes. Economy for unloaded around town, tune for towing and a power tune would be fine.
The HPOP is another mod I am considering reading the reports about it even on unmodified injectors.
Already have an Autoenginuity checker for diagnostics but I could use the target numbers for hpop duty cycle and any other numbers that are significant. It passes the cylinder contribution tests but idle seems a bit rough.