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favorite this post Duramax power / mpg box (Geneseo) hide this posting unhide

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I had this in my 16 duramax for a few months, works good. Gives about 50hp boost to mid range for better fuel economy and towing. Does not effect warranty. Can find more info on eBay or you tube. Will sell for 180 or trade for a good edelbrock 600 or 750 carb.
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