 Notice how the gear on the...  Notice how the gear on the shaft is removable to install onthe new throttle body, make sure you put it in the new TB the same way it was on the old TB. |  Reassemble the TPS and the...  Reassemble the TPS and the TAC assembly... |  ...with Torx screws to the...  ...with Torx screws to the new throttle body. |
 After installing the TPS,...  After installing the TPS, and TAC assembly, push the blade open and watch it close to make sure nothing binds during the operation of the blade. |  Wallah, the assembled VMAX...  Wallah, the assembled VMAX ported LS1 Throttle body. |  Before installing the throttle...  Before installing the throttle body, check the o-ring gasket on the intake manifold to make sure there are no cuts or problems with it sealing to the TB. |
 Reinstall the throttle body...  Reinstall the throttle body and install the three bolts... |  ...TPS and TAC electrical...  ...TPS and TAC electrical connectors. |  Reinstall the fresh air hose...  Reinstall the fresh air hose from the valve cover. |
 Reinstall the intake system...  Reinstall the intake system to the throttle body. |  Back to the rollers for testing...  Back to the rollers for testing on Next Level Performance's Dynojet 224 XLC chassis dynamometer. |  Geoff Skorupa of Next Level...  Geoff Skorupa of Next Level Performance unlocking the mysteries of the laptop computer while tuning Project C5X with HP Tuner software. |
We decided to run a check run to make sure we were in the same ballpark since it had been a while since we had Project C5X on the dyno. The first run produced 327.90 horsepower at 337.37 lb-ft of rear-wheel torque which was pretty close to where we needed to be. After the VMax TB install, the next dyno run produced 335.49 horsepower at 343.21 lb-ft of rear-wheel torque, picking up another 7 peak horsepower and almost 6 lb-ft of rear-wheel torque.