They need the VIN and injector codes for the exchange program. If you remove your ECM and send it in, then they don't.

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Matt B.

05 Limited CRD. Bought it new. 112k on the clock now.

GDE Eco-tune, rear differential drain plug (drilled and tapped the pumpkin), transmission pan drain plug, Fumoto oil valve, fuel filler neck restriction removed, front hitch, Hayden fan clutch, Sears P1 battery since 08, Mobil 1 5w40, 5 volt glow plugs, DIY timing belt at 109k

thank you that is just what i needed to know ordering the hot tune now. I still cant belive one of my injector codes is 6HITYS

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daily driver:06 midnight blue jeep liberty CRD sport.
mods: CRD frakenlift, 245/75R16 grabbers on Soft 8's,All J interior rack,front hitch,custom intake,ORM, EHM GDE hot tune
141k miles