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Original post by: Bryan Gagnon ,


Doesnt matter wether its an mxs or nxs, they are both 15.2 litre engines and you cant run a 625 tune if it doesnt have the necessary hardware. Nxs and mxs are the same. Up to 550 hp unless you order a 625 which had different pistons, turbo, injectors... you dont beleive me call CAT. Print out from who?? Diesel doctor... do some research he's a fraud. He gave you different fls and fts settins and possibly some trim codes. Definately more power but not a 625