38mm Wastegate

Welding flange, gasket and Banjo bolts included

However, we recommend buying an extra flange and gasket to avoid welding the flange itself that seals against the valve.

CC-dimensions between bolt holes: 71mm

Total height: 135mm

The spring included is a 0.7Bar spring

You cannot test the wastegate loose with compressed air, then you do not take into account the exhaust back pressure which also helps to open the wastegate

If you have low exhaust back pressure, you will have higher boost pressure, if you have high exhaust back pressure, you will have lower boost pressure