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| Minotaur Automotive Tuning Software Tune your own 7.3L Diesel! If you have a question or comment about Minotaur? Post it here. Also, check out our Facebook group: Facebook - Minotaur Tuners |
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#1
Fri, October 16th, 2009, 08:42 AM
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Just a little bit of extra information.......
If you do weld a bung in your exhaust pipe and put an oxygen sensor in it, you just wasted the oxygen sensor. If you've ever tried making an oxygen sensor live in the exhaust pipe of a two-cycle engine, you'll be hard pressed to get one to live in a diesel. Cut the already short life expectancy of a wideband O2 down some more. Diesel engines run on widely varying air/fuel ratios. That's the nature of the beast. There is already 100% of the available air inside the combustion chamber when the piston hits TDC compression but the amount of fuel -ONLY the amount of fuel and when it's injected- decides how much force is transferred to the crankshaft.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years. Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim. 
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#2
Fri, October 16th, 2009, 12:00 PM
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Just wondering, but it seems to me that my truck spools fastest, sounds best, and runs all out when there is just a slight haze... maybe a little more. So does that mean that a diesel runs best with a little richness? Or does it mean that a little added fuel burning in the up-pipes helps spooling?
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#3
Fri, October 16th, 2009, 01:50 PM
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Yep.
Just a little extra fuel is all it takes to make more power.
__________________
Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years. Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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#4
Fri, October 16th, 2009, 02:12 PM
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Great thread, you guys!
 You just added immensely to my meager store of diesel facts.- Jack
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 2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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#5
Fri, October 16th, 2009, 07:27 PM
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thats what I was looking for guys.
Nope I have not welded in a bung for a wideband I was just wondering what you look for in getting the most optimum A/F ratio. The only expierence I have with diesels is repairing the broken ones, and that is getting too easy with all the common failures. My buddies keep telling me to leave the truck well enough alone but I cann't do that I haven't since I bought my 1st car and now I got my 98 accord getting close to 40 mpg's with some tunning. Next question would it be a waste of $$$$ to have an EGT gauge for each bank?
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#6
Fri, October 16th, 2009, 07:46 PM
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Basically. I mean, if you WANT to then it's not going to hurt anything. The only time you would really benefit to having one in each back would be to diagnose a driveability or mechanical concern causing a misfire.
__________________
Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years. Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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