Please change your oil before getting your car tuned.
If your car is turbocharged, supercharged, or uses nitrous, you will need to gap your spark plugs down to 0.020. This is a requirement for a smooth tuning session since increased cylinder pressure will cause misfires if the gap is left at factory settings.
For turbocharged cars using a boost controller with external wastegates, please connect the boost control solenoid using the following instructions:
Port 1: Leave this port vented to the atmosphere.
Port 2: Connect this port to the bottom port of the wastegate. If you have more than one wastegate, you must tee both wastegate lines together and connect them to port 2 of the solenoid.
Port 3: Connect this port to the intake manifold.
This only works for external wastegates. If you have internal wastegates, please let us know before your appointment and I will provide different material. If you are using a GReddy Profec boost controller, please let us know before your appointment and I will provide different instructions for that as well.
We do not recommend using Bosch injectors on the VHR but they will work fine for the HR and DE.
Warning: 2007-2013 Nissan VQ engines are often plagued with worn oil gallery gaskets that will cause oil pressure loss at high RPM. In most cases, this is a non issue with tuning, but if the car is abused and maintenance is neglected, the chance of internal engine damage due to oil pressure loss is prevalent. If you are planning on driving your car with sustained high RPM and load, please consider the EPS Tuning oil gallery gasket. 2014+ engines are typically not plagued with this issue due to their updated design.