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if your going to do anything that a chip would do i would take your truck to a tunning shop have them program your ecu for supporting mods such as bigger injectors, exuast, intake, or anything else you may have. you may not have this option so you may have to send it off to a shop and have them do it but the best way is if they can use your vehicle on a dyno to obtain the best results. otherwise its probably not worth the money for a cheap chip, but proven piggyback systems work as well but they are just tricking the ecu for instance the apexi safcII works well but its a pain to tune it to a good setting but it works, im sure there are alot of other good piggyback systems but the best option is having your ecu tuned by a reputable shop.
 
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