2002 Honda S2000Apex WS ExhaustAEM Intake
| rpm | Before | After | Gain |
| 2500 | 47.1 | 46.7 | -.04 |
| 3000 | 59.7 | 60.0 | 0.3 |
| 3500 | 75.5 | 75.7 | 0.2 |
| 4000 | 85.2 | 85.5 | 0.3 |
| 4500 | 92.9 | 93.7 | 0.8 |
| 5000 | 104.4 | 105.7 | 1.3 |
| 5500 | 120.7 | 121.7 | 1.0 |
| 6000 | 151.7 | 151.9 | 0.2 |
| 6500 | 163.8 | 165.9 | 2.1 |
| 7000 | 172.4 | 174.0 | 1.6 |
| 7500 | 184.9 | 186.9 | 2.0 |
| 8000 | 192.2 | 193.8 | 1.6 |
| 8500 | 189.0 | 190.3 | 1.3 |
| avg. | | | 1.03 |
1995 Mazda RX-7 Twin TurboStock engineApex GT front mount intercoolerRSR cat back exhaustApex Power FC tuned by XS550cc primary injectors, 1300cc secondary injectorsStock twin-turbos
| rpm | Before | After | Gain |
| 3000 | 129.2 | 134.7 | 5.5 |
| 3500 | 163.8 | 166.2 | 2.4 |
| 4000 | 185.5 | 186.6 | 1.1 |
| 4500 | 233.3 | 240.0 | 6.7 |
| 5000 | 265.7 | 274.5 | 8.8 |
| 5500 | 289.3 | 298.9 | 9.6 |
| 6000 | 306.6 | 311.4 | 4.8 |
| 6500 | 313.0 | 328.3 | 15.3 |
| 7000 | 320.7 | 330.3 | 9.6 |
| avg. | | | 7.09 |