Hey huhner, I've modifying EGR coolers and up pipes for awhile. Since I have done mine, I've had zero problems. I just reuse and modify the person's EGR cooler and up pipe. Then you'll never have to worry about it. I use a TIG welder and stainless material. Plus I have lower EGT, better MPG, and the coolant is cooler.
This way if the smog police ever wanted to examine your egr equipment. It's still there
. I read that even just blocking the up pipe, the smog test will read lower emissions than the one that has a working egr system. That EGR system is a waste of money................
I don't like using hoses. Where the bend is at 180 degrees, the coolant, over time, will wear out the walls. Then you'll have to replace the hose again.
Just by blocking the up pipe, you will stop the flow of exhaust gases. However, if the cooler ever started to leak, it can still enter the engine intake.
It only takes me about 2.5 hours to complete. Where's MN? I'm in Washington State.
Also, I'm a Union Steamfitter/Pipe Welder, I work with high pressure/heat steam systems. Like oil companies, hospitals, and other industrial construction.