1989-1994 911 Carrera Turbosystems spreadsheet
| Description | Stage 1 | Stage 2 | Stage 3 | Stage 4 | Stage 4+ |
|---|---|---|---|---|---|
| Protomotive Intercooler | n.a. | Included | Included | Included | Included |
| Protomotive SS Headers | n.a. | n.a. | n.a. | Included | Included |
| Protomotive SS Muffler | Included | Included | Included | Included | Included |
| Protomotive SS Heater | n.a. | n.a. | n.a. | Included | Included |
| Protmotive Fuel Pressure Reg. | Included | Included | Included | Included | Included |
| Protmotive Software | Included | Included | Included | Included | Included |
| Protmotive Manifold Straps | Included | Included | Included | Included | Included |
| Turbocharger | Single | Single | Single | Twin | Twin |
| Boost Control | Mechanical | Electronic | Electronic | Electronic | Electronic |
| Boost Gauge | n.a. | Electronic | Electronic | Electronic | Electronic |
| Clutch Upgrade | n.a. | Disk Only | Disk / Pressure Plate | Disk / Pressure Plate | Disk / Pressure Plate |
| High Flow Fuel Injectors | Included | Included | Included | Included | Included |
| Fuel Pump | n.a. | High Flow | Twin Pumps | Twin Pumps | Twin Pumps |
| Cylinder Head Seal | n.a. | n.a. | Flame Ringed | Flame Ringed | Flame Ringed |
| Horsepower Capability | 400 hp | 560 hp | 600 hp | 650 hp | 700 hp |
| Max Boost Pressure | .5 bar | 1.0 bar | 1.2 bar | 1.2 bar | 1.25 bar |
| Engine Displacement (cc) | 3600 | 3600 | 3745 | 3600 | 3745 |
| Compression Ratio | 8.25 | 8.25 | 8.00 | 8.25 | 8.00 |
| Spark Plugs | Two per Cylinder | Two per Cylinder | Two per Cylinder | Two per Cylinder | Two per Cylinder |
| Ignition System | Inductive | Inductive | Capacitive Discharge | Capacitive Discharge | Capacitive Discharge |
| Engine Rebuild | Top – End | Top – End | Top – End | Complete | Complete |
| Alternate Camshaft Profiles | Optional | Optional | Optional | Optional | Optional |
| High Rate Valve Springs | Optional | Optional | Optional | Optional | Optional |
| Ported manifolds | Optional – pre 1992 | Optional – pre 1992 | Optional – pre 1992 | Optional – pre 1992 | Optional – pre 1992 |
| Protomotive Mass Flow Sensor | Optional | Optional | Optional | Optional | Optional |
| Lightweight Clutch Package | Optional | Optional | Optional | Included | Included |
| Approximate Installation Time | 4 – 6 weeks | 6 – 8 weeks | 8 – 10 weeks | 12 – 16 weeks | 12 – 16 weeks |
| Kit Available | To Distributors Only | To Distributors Only | To Distributors Only | To Distributors Only | To Distributors Only |
1989-1994 911 Carrera Turbosystems spreadsheet
Note: Kit items are recommendations only and may change as further
development has been completed.
