everything is its flaw. It deletes EGR. You have to relocate your Idle Air control valve. After two years in teh making they put out a product that completely killed any want for a product that had skunk2 on it. My car is faster with my stock intake manifold. Just dont buy it...period.gfresh86 said:how come stay away from teh skunk2 manifolds? waht are its flaws?