Okay, so a friend of mine and I just installed the skunk2 IM on his 2001 Base Prelude and even though we have followed skunk2's advise we are still getting an EGR code for P1401 EGR circuit high input. The car runs great and pulls much stronger so overall we are impressed but the CEL is annoying. Any ideas? We have made 10 or so calls to skunk2 and finally talked to a guy named charles who said to swap the two vacuum hoses coming from the EGR solenoid. That worked for four days and then the code came back. His car is stock except for a CAI. According to the vacuum hose diagram on the hood everything else is correct which is evident by the lack of other codes. Skunk2 did a good job on the manifold but a sorry job for not including basic hose diagrams and for having suck ass tech support. Thanks.