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Original post by: Bryan Gagnon ,


Douglas Grissom you've been had, a 550 cannot be tuned to 625hp/2050tq, the 625 runs different injectors, cam, and pistons, a 625 tune in a 550 will lose you power as the625 has larger injectors with a smaller pulse. the only thing Diesel dr or i should call him diesel fraud does is play with injector trim codes and such, its still a 550hp/1850tq tune, will definately run betterbut it aint no 625