With the Flowmaster U-Fit pieces, Super 40 mufflers, and Hooker collector adapters tack welded in place, Mayea removed the system from the Nova to make the final welds. Mayea set the Millermatic 35 to 4 amps current and the wire feed speed to between 40 and 45 inches per minute, using .035-inch wire. “You don’t want too much heat or you will blow a bunch of holes. You also need a really good ground connection,” Mayea says. Some Miller MIGs have Auto-Set, which only requires the user to set the material thickness (16 gauge in this case) and the wire thickness. Amperage and wire speed are automatically set.