Vacuum Diagrams

This vacuum diagram shows vacuum routing and sensor location for a typical 90-91 integra. This vacuum diagram is also useful for 88-91 Civic or CRX with a B18A1 engine swap.
This is a vacuum diagram with sensor location for any 99-00 Civic with a 99-00 Civic SI B16A2 engine. (other OBD2 engines similar)
This is a typical vacuum diagram with sensor layout for a 92-93 integra GSR with B17A1 engine. This diagram is also useful for 92-93 integra LS/RS with B18A1 without a dashpot valve, or 88-91 Civic/ CRX with an OBD0 B series converted to OBD1.
This is a typical vacuum diagram with sensor location for H22 and H23 engines.
This is a typical vacuum diagram with sensor location for a 94-95 integra gsr with B18C1 engine. This vacuum diagram is also accurate for any 92-95 civic with a B18C1 integra gsr engine swap.
This is a vacuum diagram for a 88-91 CRX Si-R. This vacuum diagram is accurate for any 88-91 USDM Civic or CRX with an OBD0 B16a engine. ( OBD0 LS B18A1 vacuum routing similar)