Khello, so after I finally got my FD back with lots of upgrades and I still have a headache and irritated eyes from my first drive back from the shop to my house.

On my way home, I smelled fumes so I rolled down my windows but that didn't seem to help much. After reading through some threads it sounded like maybe I'm running rich? The car got tuned with Power FC by RRR, so I would hoping that's not the culprit.

I also came across threads that said if you're smelling exhaust / fumes inside the cabin then you probably have a exhaust leak. The thing is I literally got a RB cat-back installed a couple weeks ago and they used new gaskets, so is that still likely?

The new single turbo (GT40R) setup I got is practically new, so where else could I have a exhaust leak?

Any advice/suggestions much appreciated.