The EGR does not decrese performance whatsoever.
It does not allow dirt into the motor.
It is inoperative at idle.
To retain stock performance w/EGR removed requires modifying the ignition curve(less part throttle advance).
Additionly,mileage will go down because of the increase in engine pumping losses.
Removing the EGR is for dummies,
Sorry, but I'm right and you need to research this subject further...
We are talking about EA82's and that should be considered in this discussion, we are not talking about newer more modern EGR's, which do have a lot less problems and run much more efficiently.
As I stated, it only affects high rpm performance, but it does, although slightly. These motors(EA82's) need all the help they can get so even a slight increase in power is welcome to most. The "dirt" that is allowed into the intake charge is carbon deposits from the exhaust stream. It is these same carbon deposits that make EGR's go bad...when they go bad, they stay shut, which can throw CEL's or they stay open at lower RPMs, which affects idle, causing idle issues. If you pull your egr, and look at it, you'll see these deposits I'm talking about.
Theres no need to adjust timing curves after removing the EGR too. I've pulled many EGR's on many different motors of many different makes. I've NEVER seen a decrease in power or milage, ONLY and increase... This is because at higher RPMs, you get more combustible intake charge into the combustion chamber increasing efficiency, therefore increasing power and mileage. When inert gas(exhaust gas) is introduced in to the intake charge, it basicly decreases the effective displacement of the motor.
If removing the ERG is for dummies, why don't you see them on ANY non-DOT approved performance oriented motor?...The reason is that EGR's are sole for emmisions, lowering nitrogen oxide to be specific, and many motors that have come after the EA82 DO NOT have EGR's including some of the EJ motors, like my 93' EJ22(which I didn't remove, because they don't come with one).
This subject has been beaten to death on many forums, including here, so if I haven't convinced you, I encourage you use the search function or google and look for yourself.
To get back to the OP questions, The PVC routing can be found here on the forum using the search, its really simple. As mentioned before, If you have inspections, I'd keep everything stock, which means a weber may be out for you.