Seller notes

Adjusting the Valve is done by changing the springs and using supplied spacers.Red spring - 8-23 PSIYellow spring - 23-30 PSI Blue spring- 30 + PSIAdd spacers to fine tune spring tension between spring colors.Diverter or Bypass Valve, direct replacement for plastic OEM type DV (with rubber bladder that frequently fails). Used in turbo engines from Audi, VW, Saab, Volvo, Porsche, etc. Stock replacement.Must Have or 'strongly recommended' for any tuned engine.This valve is durable and designed to ...

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