"I can see things I can improve, but was pleased to see my reaction times were really good and it showed on race day. It's great being part of the academy group, everyone is getting on even better now than we did in the first round and it's great we can be friendly outside the car, yet when it comes to race time, we race seriously," he said.
Friday's first practice run saw Cox second fastest straight off the start line.
"But then over the whole weekend I felt like I just wasn't improving while others were getting quicker with each run. After three qualifying races, I was sixth in my semifinal so I didn't make the final. The lack of experience in front wheel drive let me down a bit, compared to some of the other drivers who are competing regularly in them."
Cox described the Honkajoki track as being even faster than the previous round in Holjes, with a greater ratio of gravel to tarmac.
"I thought I'd like it more having a gravel background from rallying, but in the races it didn't quite go the way I thought it would with my mindset being more how I'd drive a 4WD car."
Cox has three more RX Academy events this year on August 11 in Jalasjarvi, August 25 in Kouvola and the final on October 7 at Tierps in Sweden.