I installed mine myself, took me two days. The downpipe is not easy, I could not get the bottom bolts loose on my HX35 so I took the entire exhaust manifold off with the trubo attached, pre oil the turbo by pouring some oil in the hole where the ss line hooks to the trubo and then spinning the internals by hand - repeat. The break in is acomplished by not driving like an insane lunatic for 10 hours or so. I tried not to drive at a constant RPM for the 10 hours too. No WOT runs and dont blib the peddle either. Every thing you do needs to be smooth.....
Really it was not a big job, just a little hard to do in the driveway in the rain by my self... good luck.
JR2