Well, I am on the market for an intake manifold. I am looking for something will help persue my 450w mark, but not cost as much. My thing is, I am trying to be legal, emissions and etc... I have noticed that all SMIM say for EGR canceled. I will need this to pass CO emissions. so is there a way to keep the emissions system and still have a SMIM, and if so, where is there info, or a SMIM that works with it.