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New truck Upgrades?

865 Views 8 Replies 4 Participants Last post by  n0useforaname
I just bought a 05 GMC LLY Looking for programer for towing and better mileage.What should I look for? Also what upgrades do Yall recomend Exauste/ Egr ?
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85-100hp. but just to be safe, its best if you get a tranny kit. you wont regret it. i'd say Suncoast or ATS.
1 - 1 of 9 Posts
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