Everything has been great, the Z was just as I remembered, buuut....today I get a check engine light. D'oh! Codes 32 and 51. I see that 32 is the EGR valve. Is it tough to replace? The TTZD page was pretty vauge on where its located. Anyone want to point this n00b in the right direction? How much does a new EGR cost on average? And what the hell do I do about the 51?