I'll give you credit for posting a 250-260 WHP log... No way it approaches 300WHP.
Same car, small 16G, and it would make 300WHP on almost any dyno. Actual power between 300 and 320 ATW. A little less aggressive on top AFR's 12.1 peak torque and 11.9 at power peak. It's a small 16G so notice how it's pretty much all packed up and done by 5.8KRPM with this boost curve.
Code:
TIME G/REV RPM TIMING IDC IAT MRP MAFG/S MPH
234 1.09 2654 42.50 9.63 70.00 0.66 54.03 35
343 1.16 2676 31.00 10.84 70.00 1.12 53.29 35
437 1.20 2676 32.00 11.42 70.00 1.35 54.37 35
561 1.23 2704 31.50 11.53 70.00 1.88 56.09 35
655 1.25 2736 30.50 12.26 70.00 2.13 58.92 35
764 1.28 2733 30.00 12.41 70.00 2.51 59.76 36
873 1.32 2763 28.50 12.97 70.00 2.92 60.96 36
967 1.35 2804 28.50 13.15 70.00 3.29 63.67 36
1029 1.37 2831 27.50 13.29 70.00 3.65 64.01 36
1092 1.40 2836 27.00 13.92 70.00 4.08 68.00 36
1217 1.43 2858 25.50 14.02 70.00 4.41 68.19 37
1310 1.45 2876 25.00 14.72 70.00 4.78 71.31 37
1419 1.49 2934 24.00 15.02 70.00 5.16 72.04 37
1513 1.51 2949 23.50 15.73 70.00 5.57 74.79 37
1607 1.55 2958 23.50 15.78 70.00 5.98 77.12 39
1716 1.59 3012 23.50 16.71 70.00 6.28 81.48 39
1763 1.61 3030 23.50 17.45 70.00 6.65 82.31 39
1887 1.65 3075 23.00 17.71 70.00 7.10 86.28 39
1997 1.69 3098 23.00 18.50 70.00 7.58 88.76 39
2059 1.73 3133 23.00 19.38 70.00 7.97 92.63 40
2137 1.77 3129 23.00 20.18 70.00 8.45 94.44 40
2277 1.83 3194 22.50 20.44 70.00 8.97 95.57 40
2387 1.88 3200 22.50 22.05 70.00 9.48 102.53 40
2433 1.92 3265 22.50 22.29 70.00 10.04 104.80 40
2527 2.00 3254 22.50 22.90 70.00 10.62 110.80 42
2652 2.05 3311 21.50 24.02 70.00 11.12 114.25 42
2761 2.13 3354 21.00 25.04 70.00 11.87 122.64 42
2855 2.21 3386 20.00 26.00 70.00 12.68 124.53 42
2964 2.31 3414 20.00 26.94 70.00 13.44 134.59 42
3057 2.40 3498 19.00 29.10 70.00 14.46 140.27 44
3167 2.52 3490 17.50 30.52 70.00 15.55 151.25 44
3198 2.63 3558 17.00 32.64 70.00 16.86 157.29 44
3291 2.75 3592 15.50 33.71 70.00 18.18 171.48 44
3416 2.85 3628 14.00 36.75 70.00 19.32 177.59 44
3510 2.96 3685 13.00 37.74 70.00 20.52 183.37 47
3603 3.04 3738 12.50 39.70 70.00 21.50 193.67 47
3728 3.11 3815 12.00 40.69 70.00 22.33 198.73 47
3822 3.16 3850 12.00 42.71 70.00 22.95 205.79 47
3931 3.21 3910 12.00 43.37 70.00 23.42 209.69 47
4025 3.24 3912 12.00 44.23 70.00 23.42 220.56 49
4103 3.27 3994 12.00 46.01 70.00 23.75 220.63 49
4181 3.31 4100 12.00 46.36 70.00 23.86 225.56 49
4290 3.32 4180 11.50 48.16 70.00 23.94 231.68 49
4337 3.33 4150 11.50 48.70 70.00 23.73 233.04 49
4493 3.36 4242 11.50 49.77 70.00 23.90 239.84 52
4555 3.35 4308 11.50 49.63 70.00 23.65 242.11 52
4680 3.32 4360 11.50 50.23 70.00 23.47 244.36 52
4758 3.32 4391 11.50 50.58 70.00 23.20 244.81 52
4867 3.28 4440 12.00 50.57 70.00 22.97 246.61 52
4976 3.27 4568 12.00 50.67 68.00 22.70 245.27 57
5070 3.24 4537 12.00 50.33 68.00 22.49 248.85 57
5179 3.23 4601 12.50 51.04 68.00 22.26 251.55 57
5210 3.23 4708 12.50 52.23 68.00 22.10 252.45 57
5351 3.21 4774 13.00 52.96 68.00 21.85 253.79 57
5429 3.20 4765 13.00 52.86 68.00 21.64 255.13 60
5522 3.20 4820 13.00 52.44 68.00 21.58 259.17 60
5616 3.20 4892 13.00 54.27 68.00 21.33 260.96 60
5756 3.19 4947 13.00 54.88 68.00 21.25 262.31 60
5834 3.19 5010 13.00 55.57 68.00 21.08 267.69 60
5897 3.19 5081 13.00 56.37 68.00 21.10 269.53 64
6068 3.19 5092 13.00 56.48 68.00 20.96 271.84 64
6224 3.20 5194 13.00 58.06 68.00 20.77 278.83 64
6287 3.17 5282 13.00 57.46 68.00 20.63 278.83 67
6396 3.15 5326 13.00 57.95 68.00 20.44 278.35 67
6505 3.15 5357 13.50 58.28 68.00 20.32 280.21 67
6614 3.13 5423 13.50 59.00 68.00 20.13 283.47 67
6708 3.11 5442 13.50 59.21 68.00 19.97 282.55 67
6817 3.09 5506 13.50 58.73 68.00 19.72 283.01 70
6911 3.09 5564 13.50 59.34 68.00 19.47 287.20 70
6957 3.07 5576 13.50 59.48 68.00 19.20 286.73 70
7051 3.04 5601 14.00 59.74 68.00 18.97 285.80 70
7207 3.03 5656 14.00 59.12 68.00 18.64 288.12 70
7269 2.99 5699 14.00 59.57 68.00 18.27 286.73 74
7347 2.99 5742 14.00 60.03 68.00 18.04 287.65 74
7488 2.95 5791 14.50 60.54 68.00 17.71 285.80 74
7550 2.96 5846 15.00 59.86 68.00 17.58 288.59 74
7675 2.92 5943 15.00 60.85 68.00 17.27 288.12 74
7737 2.89 5943 15.50 60.85 68.00 17.00 289.52 77
7800 2.89 5943 15.50 60.50 68.00 16.67 289.52 77
7971 2.84 6034 15.50 59.21 68.00 16.18 284.40 77
8018 2.81 6082 16.00 59.69 68.00 15.88 284.40 77
8127 2.77 6082 16.00 59.69 68.00 15.28 284.40 77
8268 2.72 6162 16.50 59.16 68.00 14.72 281.15 80
8315 2.69 6168 17.00 57.89 68.00 14.46 276.03 80
8408 2.67 6168 17.00 58.81 68.00 14.04 277.43 80