There are three available kits.
No Tune Kit- NO Tune models are setup to support 430 Rear wheel HP (500 crank HP)
(365-370 Rear wheel HP is a common stock number on a 6sp man car/
315-320 Rear wheel hp on an automatic car). A common power combination would
be long tube headers, high flow catalytic converters and a cat back exhaust and the VR.
You may even "tune" the No Tune model for some added power.
Before choosing the NO Tune model you must check
the factory code on the OEM air meter
Tune Kit- Tune kits are setup for 430-700 Rear Wheel HP,small and large Cubic inch motors.
These must be tuned when they are installed. If you do not tune them the fuel trims will be at
a high level ex +18-20%+ and the MAF will be scaling low in its MZ range.
Tune models are made to be tuned on the spot for max power.
Super Street- Super Street is setup for smaller lower power combinations
from stock 400hp to 700hp (call for higher HP applications) To achieve this
we increased peak flow but decreased the peak volume to insure good low RPM drivability,
even with the wildest camshaft combinations.