TurboKraft's EFI Injector Blocks provide the simplest way to update any 1976-94 Turbo to modern EFI (Electronic Fuel Injection).  They have been tested on 911 Turbo engines making over 595 horsepower at the rear wheels, or approximately 680hp at the flywheel.

Using your existing 911 Turbo cylinder heads & intake manifold yields much faster throttle response than the much more complicated – and much more expensive – Carrera manifold conversion.  Installing our EFI Injector Blocks requires none of the custom head porting & intercooler fabrication that fitting a Carrera manifold requires.

Package includes:
* Billet aluminum EFI Injector Blocks
* Cylinder head insulator blocks & all gaskets
* Stainless steel fuel rails with -6AN fittings
* Billet aluminum fuel rail mounts
* Fuel injector retaining clips & wiring harness clips

TurboKraft inventories EFI Injector Blocks in the two most commonly requested sizes:  32mm and 38mm I.D. (bore)
Custom bore sizes up to 42mm ID are also available, including tapered bores, for an additional cost.

Examples of straight bore sizes:
- 32mm = the standard intake port diameter for all production 911 Turbos 1976-1994
- 36mm = standard for the 1994 Turbo S and the most common size for ported 911 Turbo engines, as it is the limit to which the stock plastic injector blocks may be ported
- 38mm = popular for high power, larger displacement Turbo engines
- 41.5mm = 930 heads' intake ports enlarged to 3.2L Carrera specification

Example of tapered bore:
- 40mm bore at top tapering down to 32mm.  Engine's intake manifold ported to maximize airflow (i.e. airflow balanced & optimized by Extrude-Honing) but retaining stock cylinder heads for highest port velocity and reduced labor costs (no cylinder head removal).