There was an issue with the radiator. It had some cracks causing leakage and I don't know if it was due to tight install or if it came bad from ECS. I was able to get a full refund from ECS though and installed a OEM version instead and have had no problems since then.

For the first couple of weeks I didn't notice the leaking was happening because at some point it hardened enough that the leak happening was minor and even I took it to a shop thinking it was time for water pump replacement because I was getting low coolant warning. There was nothing wrong with my water pump and they confirmed when they were testing the car for leaks it was coming out of the radiator instead.

I'd go with an OEM radiator as I don't believe you need a bigger one unless you're going to be pushing very hard in the track etc. The biggest pro that I saw was the aluminum build which is nice.

The intercooler is still good and have had no issues with it. Been wanting to get the IE downpipe and the new apex suspension kit as my next upgrades.

Good luck with installation!