He might not be as slow as his times reflect, My Cobra ran 15.0 last time, (severe tire spin on unprepped track did 14.5 bone stock on a different track b4), and it was running good, same night a wrx was running high 15's and a 99+ gt ras running high 15's as well. May just be his location. Anyway guy, when I did RLCA's on mine I didn't feel a lick of difference in its biting abilities. Still a tire spinner with nitto drags and the RLCA's. On that track on that night mine would only do a 2.3 60'. 1st was virtually useless at any throttle position. My subframes have actually seemed to make the biggest difference, hopefully with those and the 315's it'll hook harder next time out.