Byrne won race one and was more than happy with his weekend despite just missing out on the double when Josh Brookes nipped through.
"It has been a good day for the Rapid Solicitors Kawasaki team and to have got a first and second place on the first round back was something I would have chewed someone's arm off for before this weekend," he said.
"Josh made his move and then it might have been a bit of bad timing but I came across the backmarker as he went for the inside and I went for the outside and lost a bit of drive but I am really, really happy.
"Unfortunately myself and Josh have changed positions in the standings after the second race but it doesn't matter until Brands Hatch. All credit to the team and we go to Silverstone happy so onwards and upwards from there."
Brookes is excited to lead the standings by two points with two rounds remaining after an identical weekend to 'Shakey'.
"I didn't get the best start and got passed by some people and then I had Stuart Easton in front of me but he was tough to pass so fair play to him," the Tyco Suzuki rider said.
"Once I got back to Shakey I started getting into a rhythm and it was me and him going at it.
"He was dragging me up the track by him cutting the wind and it gave me self confidence that I could go a bit quicker and then when I went ahead of him you are out of the slipstream and I felt the wind hitting me and it felt slow and then he came back by me.
"The draft into the last section gives you confidence that you can make a move into the final chicane and it can be a bit desperate but I knew couldn't ride around him so thought would try and nip up the inside on the brakes.
"As it was I made it clean and then got around the lapped rider and the rest is history and it is another great result for the Tyco Suzuki team.
"The points are close and that is exciting for me and I am sure everyone that follows the championship."
The championship heads to Silverstone this weekend for the second Showdown weekend before the season ends at Brands on October 14.
1 Josh Brookes (Tyco Suzuki) - 570
2 Shane Byrne (Rapid Solicitors Kawasaki) - 568
3 Tommy Hill (Swan Yamaha) - 548
4 Alex Lowes (WFR Honda) - 534
5 Michael Laverty (Samsung Honda) - 532
6 Tommy Bridewell (Supersonic BMW) - 521
- Josh Brookes