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    • Mopar1973Man

      Quadzilla Tunes   06/12/2017

      QUADZILLA TUNE REPOSITORY - There is now a Quadzilla tune download area. When you submit a tune file to the download area it will automatically create a forum topic that allows discussion of your tune. So export your tune and upload it to the site. Then we all can help out in building better tunes. Check it out gang...
    • Mopar1973Man

      911 Support Group   06/22/2017

      Hey Gang, I've got the 911 support group database back up and running once again. It's listed in the 911 support category. It will allow members to list their contact information and location so other have a listed of members to call upon in the time of need. So if you wish to support other member please stop by and add your listing into the database. https://mopar1973man.com/cummins/911-support.html/contacts/

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Mopar1973Man

Figuring drag, HP, and MPG in one calculator...

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I want to make a spreadsheet of all that too, but factor in RPM. IMHO, I think 1500-1600RPM is most efficient, equating to 50-55mph. This is speaking in a real world sense. 1300-1400RPM might be better, but you get to any hill and now you are lugging it and the turbo is well below spool speed and you can watch your fuel shoot out the exhaust. With that in mind, the only way to really factor it is to get some solid data on just how much more fuel it takes to do 50mph in 4th gear than in 5th. In theory it would be the same, but having to turn the engine more RPM does cost something. Just wondering how to figure it.

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Thats some cool info, but I wonder how much modern emissions effects that?

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Pretty cool info. but too much hassle. Reminds me of my past days filling out PPC cards prior to flight on a checkride. :cookoo::lol:

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PPC cards

Performance Planning Card cards? :moon: Yeah, the one a year long hand sucks! Thank god for the PPC program! I had to do one a day at the MTP course this spring, by hand.. I honestly think that was the most annoying part of the course..

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