So did you ever get the APR ECU Tune? I'm curious as to the difference in case you did. I'm thinking of going that route as well.
The APR ECU Tune improved the mid-range torque in mine, it is noticeable although gains are not significant. I also had the catless test pipes installed by USP Motorsports as part of their R&D, the sound it brought to the car is great and louder but didn't really get any real gains out of it...
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