How well can your dad drive?
1. From standing still- launch at about 4500-5000 RPM's with a quick but smooth clutch "drop"
2. Shift at about 6300 to 6500RPM's; NOT redline!
3. I don't know how the EVO is geared, but try to race him in the 1/8mi, NOT a 1/4...
You should do well. If you can race a hell of alot better than your dad then try to take him in the 1/4.
I just got my Stage 2 today with a Perrin uppipe, and Perrin DP (not a full turbo-back). In the rain w/ my G-Tech I ran a 13.7@101MPH. That was in the rain! I've been messing with the G-Tech maps I've stored to find where peak HP is. It looks like my Rex is at 220HP between 5800 to 6500RPM's depending on the run. After that, HP drops off. My fastest 1/8mi run was firstname.lastname@example.orgMPH. That was in the rain today too. I hope that helps! Good luck!