i have a 2006 duramax that i put a hypertech econ programmer in stage 2 and also a mbrp 4" turbo back exhaust. i had the check engine light come today with p0401 code. EGR code is there anything i can do to not get this code ? any help would be appreciated. thanks

 

what i would do is go with a blocker plate and get into a PPE standard or EDGE EVO race.

 

thanks for the info i have ordered a blocker plate and finger stick so far.

 

thats a good place to start