nobody is perfect. heck, I made several mistakes myself during this project and fixed it up.
@TurboABA is truly invaluable in this TDI community so I heard him out and verified... thankfully its not the worst issues as he mentioned. S3 intercooler is amazing! makes my car accelerate easier and less fuel wasted and make turbo work more and less strain on the engine. I noticed my fuel economy has improved. I also installed turbo muffler delete from Xman Turbos. the differences from stock to CR170 and muffler delete, truly eye opener to see and felt turbo spool up quicker than before.
When you get the S3 intercooler, make sure you measure the intercooler bosses to ensure they are all equal sized on the lengths itself. mine wasn't. it was around 1/4 on bottom right passenger side too long.... had to chop 1/4 off in order to get AC Condenser to mount "flush" with the intercooler and bolt on. that was what stopped me from finishing the car sooner. I also had to carefully drill the AC Condenser mounting plate in order to get S3 intercooler bolt with added washer to mount it properly. I will replace AC Condenser eventually soon as it has too many closed fins plus showing age. so it's a trial of modifying thru errors and snags. so now you know.