Cowl Induction


Cut straight lines tangent to two holes to make a rectangular hole with rounded corners. fire
This operation is fast if you use an air-powered cutoff saw as shown in photo, but it could also be done with a hacksaw.

Deburr edges with file or Dremel. Touch up to prevent rust. paint
Notice that firewall hole is placed high, up next to hood. This helps prevent water or leaves from entering intake.

Duct in place. Fit can be fine-tuned by loosening three hold-down nuts on airbox, moving airbox, then re-tightening. Duct fits tightly between airbox and firewall, locked against flange at top of firewall. Duct flange sits flat against engine side of firewall. We just snap fit ours in so that it's easily removed to access clutch cylinder, but screws could be put in on flange ends. Miata with
	Cowl Induction