98 cummins with quadzilla adrenanlie not spooiling up passed 15ish psi
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A programmer won't control boost on your truck. In order to do that you need a manual boost controller ($25 online, or put one together with parts from your local hardware store for half that, search, it's your friend). just don't go much over 30psi on that turbo or you'll be looking for a new one. Also, might want to check and make sure that tuner blocks the overboost code from throwing, otherwise it'll put your truck in limp mode and you won't be boosting at all...