Thread: 5.3 upgrades
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Old May 7th, 2013, 11:28 AM   #3
Flexin' XJ
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My programmer has a "towing" setting but I have never used it. I imagine it would help in the low end. But you have to run premium fuel.

I did a K&N FIPK and I have a Flowmaster cat-back. I haven't tried hauling anything but a 5x8 U-Haul. Pulled that just fine.
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