LEFT: With the fourth tube in place, you can see there’s still plenty of room around the oil filter.

BELOW LEFT: Up top, Breathless designed their new step headers with plenty of clearance around the steering shaft and other engine compartment components.

Breathless went with a larger 3-inch design with velocity tips inside.
   Available for all C5s, including a D-design flange version for the Z06, the new Breathless long-tube step headers are also installation friendly. One tube is removable to assist with installation, while the collectors are also removable to allow access to the bellhousing (for clutch replacement, etc.) without removing the header.
    In testing on the Breathless Performance in-house DynoJet, the new step headers have shown between 19 and 36 horsepower