RE: Superchips 3815 Now supports the 98-03 3.9L, 5.2L , 5.7L and 5.9L motor
I have a couple questions. 1st, is there a difference between these "stages" of tune in a 3815 vs a 3715 tuner? 2nd, what is a the difference between the 87 octane settings and the "towing" setting if one has a tunning file and the later doesn't. I believe the old "tow" setting in a 3715 used 89 octane gas.
Thanks in advance for your response
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Be honest man, when was the last time your 4x4 was in 4lo for 5 hours straight?
Sure, I can pull 8,000 lbs 1100 miles...and then spent 1900 bucks on a new tranny. So go for it!
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