Got the HKS Filter in the mail today.
It was super easy to install. Took less than 15 seconds to take out the old filter an put the new one into place.
The fun part was getting my AccessPORT updated and flashed into the car. As the Stage 1 maps are intended for a stock car with a stock intake/filter.
With the Stage 1+ maps installed I decided to do some quick data logging.
Boost peaked at 23psi and tapered down to 17psi. I had virtually ZERO knock with the new maps and my 0-60 times improved into the low 4 second range.
The data logging says that I've gained 57HP and 72ft.lbs over stock. Yes, I know that most data loggers aren't 100% accurate when it comes to measuring 0-60 times, or horsepower. But I will say that most people who had Stage 1+ put down in between 300 and 310 awhp at the wheels. So with the a calculation of drivetrain loss the 348hp at the crank could be accurate.
All and all the gains over the Stage 1 maps aren't noticeable by feel, but the new maps and filter should help the car breath better and perform slightly better.