Quote:
Originally Posted by e99f2506p
Early 99 F250 7.3 4x4 6 speed
I'm looking to order my chip here towards the end of the month and was wondering what tunes would be best. I read a post on the forum from over a year ago saying that since the towing tunes only change transmission settings, they aren't necessary for manual transmissions. Is this true? I tow nearly every day, not huge loads, but I still don't want to tear anything up.
Should I just stick to performance tunes? If so, I was thinking of:
1-Stock
2-80hp Daily
3-100hp Performance
4-120hp Race
5- Whisper Mode
6- Smoke Show
Make any suggestions you like. I was almost considering the 140, but I don't want to tear anything up. I see me rarely using the 120 too, but figured it'd be fun to have.
Also, I'm going to be making a few thousand mile road trip in a month and like everyone else, I'm looking for the best mileage, is it best to run on stock settings for hours on end, or which is best for economy?
Thanks
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You're right, the biggest thing about the tow tunes has to do with the automatic transmission shift strategies. Since you're the one who has control over the shift feel and shift points, that doesn't apply to you. However, the tow tunes are a specific power output and are designed to keep EGT down while towing and make the accelerator pedal input "feel" better for hauling stuff. You didn't mention how much weight you're pulling, but if it's over 8-10K, you might run into an EGT issue with an 80 HP program. I'm not trying to tell you what programs to get, but pulling really heavy loads for long periods of time with an additional 160 ft. lbs. available isn't the best thing for the transmission, u-joints, or rear axle. If you're pulling up 5-7% grades for a few miles, things will get warm really quick.
You will be fine driving across the country in any of those tunes...and if you can drive sanely, you should get better economy in all of them over stock. The 100 Perf. will probably be your best bet for economy while driving empty. You will probably find yourself in that tune most of the time and won't even use the 80DD. I'd probably stick with a lower HP tune for towing (either the 40 or 65) so you can tow whatever you want and not worry about EGT or overpowering your drivetrain.
If you have any other questions, please ask.