Partial CIS to EFI Kit

Finally an affordable solution to convert the Porsche 911 from CIS to EFI.

The BitzRacing CIS to EFI kit includes everything that is required to fully convert to Electronic Fuel Injection (EFI) from the existing Bosch CIS system, except for the EFI injectors and Fuel Pressure Regulator (FPR).

The BitzRacing CIS to EFI kit uses the MegaSquirt ECU for fuel management customized for the BitzRacing EFI kit. This little ECU has thousands of users and is flexible and user friendly. It has been used in all sorts of conversions from drag cars to land speed record vehicles.

Tuning software is Windows/Mac based and is fully customizable. You can select placement of gauges, have gauges change colours when thresholds are reached, and set ghost needles to indicate peak values.

The cost of the partial CIS to EFI kit is $1549USD.

Ready to order? Send us a message using the Contact Us form.

Additional items needed to complete CIS Look installation which can be purchased online from www.summitracing.com or from your local auto parts shop.

  • Fuel injectors: The EFI injectors that can be used are manufactured by ACCEL. They are 30lbs/hr, high impedance injectors. The Summit Racing part number is ACC-150630.
  • Fuel Pressure Regulator (FPR): The installation manual shows the MSD-2222 however this part is no longer available. An alternative is the Summit Racing part SUM-220057. You also need the fittings Summit Racing part TS-0402-1110.
  • Fuel Pressure Gauge and fitting: Refer to installation guide for part numbers.

The fuel pressure regulator requires calibrating to 2.5bar fuel pressure once installed in the car. A detailed instruction manual is available in the documentation section which outlines the calibration procedure and the installation of a fuel pressure gauge. The part number for the fuel pressure gauge is in the installation guide.

Note that the base configuration installed in the ECU with the kit assumes you installed the above EFI injectors and a calibrated fuel pressure regulator at 2.5bar fuel pressure. If you use other high impedance injectors with different flow rate or different fuel pressure, the base configuration loaded in the ECU will require changes accordingly. Low impedance injectors are NOT supported by the ECU.

The photo below shows everything that is included in the partial kit. Download a copy of the very detailed CIS to EFI installation guide for more details.
Stacks Image 398
Here is a list of what is included in the Partial CIS to EFI kit.

QTY

Description

1

MegaSquirt ECU (custom software load for Porsche 911)

1

MegaSquirt tachometer adaptor for BOSCH CDI ignition

1

Main wiring harness (from MegaSquirt to engine bay)

1

Fuel injector wiring harness with mating connector

1

¼” plastic loom for engine bay wiring dress up (15’)

6

CIS to EFI injector bung

1

Fuel pressure regulator mounting bracket (L-shaped) for MSD-2222

1

M6x16 Hex bolt, washer, lock washer for fuel pressure regulator mounting

2

Aluminum Fuel rail

6

Fuel rail mounting bracket

6

M6x40 Hex bolt (for mounting fuel rails)

12

Fuel rail bracket spacers (two per bracket)

6

M6 Nut, flat washer, lock washer

2

Fitting: -6AN male flare to –6AN O-ring

2

Fitting: -6AN male flare to –6AN swivel O-ring, 90 degree elbow

4

Fitting: -6AN swivel female flare to ¼” barbed

1

Cover for Mixture Control Unit with three M5 bolts, flat & lock washers

1

Vacuum hose (7/64” ID) 12’ length

1

1/8” plastic Tee for vacuum hose

8

Fuel injection hose clamps for ¼” hose

1

Fuel injection fuel hose (¼” ID) 6’ long

1

3 wire heated oxygen sensor with mating connector

1

Weld on oxygen sensor bung

1

Air temperature sensor with mating connector

1

11/16 x18TPI plastic nut for air temperature sensor

1

Engine temperature sensor mounted on 5/16” terminal ring

1

ATO fuse holder with 20 Amp fuse

1

ATO fuse holder with 5 Amp fuse

1

ATO fuse holder with 3 Amp fuse

15

Red butt connectors

3

Blue 5/16” stud terminal ring

2

Red T-TAP connector with mating blade

1

Tool: butt crimper, wire cutter

1

½” black Snap bushing

1

3/8” black Snap bushing

15

Tie Wraps

1

Roll of electrical black tape

1

Velcro pad

1

Straight through serial cable
Partial CIS to EFI Kit