Compression Ignition Addict
Join Date: Feb 2009
Location: Nacogdoches, TX
Thanked 27 Times in 25 Posts
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If you have no chip, you need to buy one.
Yes, it is a good idea after you get a better intake, free flowing exhaust, and gauges to make sure everything stays safe.
But with 4.88s, you're gonna be hard pressed to get any more mileage out of it. Do you tow every single day?
2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
330,000 + miles