This is POWERCAP for the standard Opel / Vauxhall C20XE Inlet Manifold. Adding this part will result in more sensitive throttle and increased power. Inlet pipe diameter is 71 mm, small pipe diameter is 20 mm. The inlet pipe goes at an angle of 20 degrees to the transverse axis of the car. Recommended ABS (or Nylon-Carbon) printing, mechanical and chemical post-processing.

Print Settings Rafts: Yes Supports: Yes Resolution: 0.4mm Infill: 100%

I recommend after printing to align the irregularities of the plane under the throttle gasket. Use 240 grit sandpaper, then 500 or 1600 grit on glass and with added water.

Feel free to write to me if you need additional variants of shape or part size for your particular variant. I will gladly complete the additional options.

Works great with this gasket https://www.cgtrader.com/3d-print-models/hobby-diy/mechanical-parts/opel-c20xe-throttle-gasket