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truck runs kind of cool (about 155 mid gauge is 210) anyway so I'm sure a few deg wont kill me on the under drive or the grill block
removing the cat is a performance trick the more free flowing you make your exhaust the more mid-top end power you will have thus use less fuel to achieve your goal speed.same idea as removing your muffler or replacing it with a high flow type. Eco modding no gas saver yes
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