Springs are sold individually, See chart below for obtaining the desired boost level for your wastegate.
(Not all images are exact representation of products)
Precision Turbo Gen 2 40mm Wastegate Spring Chart
| PSI | Springs | |
| 2.0 | Black | |
| 4.0 | Blue | |
| 6.0 | Green | |
| 8.0 | Red | |
| 10.0 | Orange | |
| 16.0 | Purple |
