I currently have a 2014 duramax ltz. It is fully deleted and tuned. Best truck I’ve ever owned hands down, once I deleted and tuned it of course. If you’re going to buy a diesel and plan on tuning it I would buy a gas because as it stands 2015 and up Chevy duramaxs are untenable , seeing as the ecm is far too complex and coded to preform a manageable tune on. Which is really unfortunate
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