On the dyno the new combination moves peak power up to 6,300 rpm and bumps it up over 80 hp. Where the power flat-lined before at 4,500 rpm before because the stock heads simply ran out of breath, now the power keeps climbing right up to 6,000 and beyond. The peak torque number is only improved by 18, but it’s what this combination does to the torque curve that’s impressive. Torque is better than the stock configuration from 4,000 rpm onsometimes by as much as 80 lb-ft.
| Baseline | HCI | Difference |
| RPM | HP | TQ | A/F | HP | TQ | A/F | HP | TQ |
| 2,400 | 119.02 | 260.44 | 13.32 | 96.97 | 212.21 | 12.94 | -22.05 | -48.23 |
| 2,500 | 123.64 | 259.74 | 13.15 | 103.25 | 216.91 | 12.63 | -20.39 | -42.83 |
| 2,600 | 128.74 | 260.07 | 12.97 | 108.36 | 218.91 | 12.91 | -20.38 | -41.16 |
| 2,700 | 134.35 | 261.34 | 12.83 | 114.18 | 222.12 | 13.09 | -20.17 | -39.22 |
| 2,800 | 139.76 | 262.16 | 12.90 | 121.13 | 227.20 | 13.07 | -18.63 | -34.96 |
| 2,900 | 145.41 | 263.35 | 13.10 | 129.81 | 235.09 | 12.96 | -15.60 | -28.26 |
| 3,000 | 151.86 | 265.86 | 13.41 | 136.58 | 239.10 | 12.88 | -15.28 | -26.76 |
| 3,100 | 159.26 | 269.82 | 13.58 | 143.85 | 243.71 | 12.93 | -15.41 | -26.11 |
| 3,200 | 167.37 | 274.69 | 13.67 | 149.80 | 245.87 | 12.9 | -17.57 | -28.82 |
| 3,300 | 176.11 | 280.28 | 13.68 | 158.52 | 252.29 | 12.75 | -17.59 | -27.99 |
| 3,400 | 183.93 | 284.12 | 13.80 | 166.85 | 257.73 | 12.83 | -17.08 | -26.39 |
| 3,500 | 192.08 | 288.23 | 13.99 | 175.76 | 263.73 | 12.94 | -16.32 | -24.50 |
| 3,600 | 198.28 | 289.27 | 14.08 | 184.97 | 269.85 | 13.03 | -13.31 | -19.42 |
| 3,700 | 203.66 | 289.09 | 14.06 | 194.70 | 276.37 | 13.03 | -8.96 | -12.72 |
| 3,800 | 210.35 | 290.73 | 13.94 | 202.46 | 279.82 | 13.03 | -7.89 | -10.91 |
| 3,900 | 217.75 | 293.23 | 13.95 | 210.55 | 283.54 | 13.01 | -7.20 | -9.69 |
| 4,000 | 224.28 | 294.48 | 14.01 | 218.50 | 286.89 | 12.89 | -5.78 | -7.59 |
| 4,100 | 229.43 | 293.90 | 13.95 | 226.91 | 290.66 | 12.77 | -2.52 | -3.24 |
| 4,200 | 235.39 | 294.35 | 13.84 | 235.28 | 294.21 | 12.74 | -0.11 | -0.14 |
| 4,300 | 240.06 | 293.22 | 13.71 | 243.47 | 297.37 | 12.73 | 3.41 | 4.15 |
| 4,400 | 245.39 | 292.92 | 13.72 | 251.27 | 299.93 | 12.73 | 5.88 | 7.01 |
| 4,500 | 249.61 | 291.33 | 13.74 | 257.92 | 301.03 | 12.79 | 8.31 | 9.70 |
| 4,600 | 252.51 | 288.31 | 13.67 | 264.70 | 302.22 | 12.83 | 12.19 | 13.91 |
| 4,700 | 255.03 | 284.99 | 13.64 | 270.64 | 302.43 | 12.80 | 15.61 | 17.44 |
| 4,800 | 257.52 | 281.78 | 13.66 | 276.96 | 303.05 | 12.75 | 19.44 | 21.27 |
| 4,900 | 258.27 | 276.83 | 13.72 | 282.17 | 302.45 | 12.68 | 23.90 | 25.62 |
| 5,000 | 257.79 | 270.80 | 13.84 | 287.65 | 302.16 | 12.68 | 29.86 | 31.36 |
| 5,100 | 258.76 | 266.49 | 14.00 | 294.41 | 303.19 | 12.72 | 35.65 | 36.70 |
| 5,200 | 256.83 | 259.41 | 14.03 | 298.80 | 301.80 | 12.82 | 41.97 | 42.39 |
| 5,300 | 255.28 | 252.97 | 13.93 | 305.65 | 302.89 | 12.91 | 50.37 | 49.92 |
| 5,400 | 255.46 | 248.47 | 13.82 | 311.30 | 302.78 | 12.92 | 55.84 | 54.31 |
| 5,500 | 254.36 | 242.89 | 13.93 | 316.93 | 302.64 | 12.98 | 62.57 | 59.75 |
| 5,600 | 252.16 | 236.50 | 13.94 | 321.53 | 301.56 | 13.09 | 69.37 | 65.06 |
| 5,700 | 252.63 | 232.78 | 13.88 | 323.59 | 298.16 | 13.15 | 70.96 | 65.38 |
| 5,800 | 248.75 | 225.26 | 13.80 | 327.94 | 296.97 | 13.14 | 79.19 | 71.71 |
| 5,900 | 246.41 | 219.36 | 13.77 | 330.43 | 294.15 | 12.96 | 84.02 | 74.79 |
| 6,000 | 241.40 | 211.30 | 14.50 | 330.91 | 289.67 | 12.84 | 89.51 | 78.37 |
| 6,100 | n/a | n/a | n/a | 332.25 | 286.08 | 12.78 | n/a | n/a |
| 6,200 | n/a | n/a | n/a | 333.21 | 282.28 | 12.77 | n/a | n/a |
| 6,300 | n/a | n/a | n/a | 334.21 | 278.62 | 12.70 | n/a | n/a |
| 6,400 | n/a | n/a | n/a | 333.88 | 273.99 | 12.90 | n/a | n/a |
| 6,500 | n/a | n/a | n/a | 211.59 | 170.97 | 12.18 | n/a | n/a |