I got a few questions that I hope I can get some answers too...

1. PCV relocation kit, where does it re locate it to? does it add any noticable performance?

2. CP3 Pumps when installing a modified CP3 is it common to get high fuel rail pressure codes?

3. What is a fuel rail pressure valve shim kit what does it do?

 

1. PCV reroute kit just vents the PCV system into the atmosphere. Usually via a piece of heater hose routed down behind the engine. Not really a performance mod, but it does keep oil from getting in your intake tract. More or a long term maintenance mod.
2. Yes. Modded CP3's are designed to flow more fuel, so your ECM tuning has to be adjusted to compensate.
3. The shim kit changes the pressure required to open a needle valve at the back of your driver side fuel rail. Putting in the shim kit basically allows you to apply more pressure to each injection event. The idea is that the fuel atomizes better and you can hold rail pressure longer at wide open throttle.
Hope that helps.