Exhaust backpressure costs you money, because it takes energy to push exhaust gases out through the tailpipe, energy that comes from the fuel you�re paying through the nose for. It also costs you power, because any residual exhaust gas left in the cylinder prevents fresh air from being drawn in on the intake stroke. This massive pipe attaches to the most important place in the exhaust stream.
smooth, constant-diameter bends
Improves fuel economy
Boosts power and torque
Complements other performance mods
Maximum flow