I installed my egr delete and lb7 up pipe yesterday. Removing all the factory stuff was easy but the factory up pipe bolts whipped me pretty good. The lower bolt on the turbo flange took me every bit of 4 or 5 hours to break loose.Once i finally got it loose, everything went smooth from there. I did notice an improvement in turbo lag especially in the higher gears. My intake was gooked up pretty good since I didnt do a block or re route until after 50k miles. It is nice to know all the emissions garbage is completely gone now.