FlatoutKrazy;Looks like with an 04 truck you have to remove the butterfly and block off the egr stuff with the CFM kit[/QUOTE said:
You have to be careful when you unplug and remove the EGR throttle plate. I put one on my truck and it lit the check engine light. After months of going back and forth with CFM, I found out that trucks delivered to MA, and I believe CA and NY have different emissions and you can't remove / unplug the EGR or the EGR throttle plates. I don't know if any other states are affected and the only trucks I can say for sure are MA delivered trucks. I am looking at a Accufab as well because you don't have to remove the EGR throttle plate