If you're looking for a fuel injector upgrade, or you're converting a carbureted engine to EFI, check out these new Delphi fuel injectors. They're compatible with gasoline, ethanol, and E85, making them perfect for your alcohol-burning race car as well as pump gas applications. These are the same size as an EV1 injector, and will fit anywhere an EV1 injector fits, including many American, European, and some Japanese cars. Of course, you will need to tune your engine management for the larger injectors if you're upsizing. These are low impedance (peak and hold) type injectors, so make sure your ECU can handle them. With Megasquirt, this means a V2.2 board will need a flyback board; V3.0 and higher have this built in. Here is a drawing with the measurements rounded to the nearest 0.01". If you are building your own fuel rails or manifold, the ID on the mounting holes should be 0.530" to 0.535" at both ends.

These injectors are a disc type with six holes for superior atomization - no "squirt gun" spray pattern here. They put out a nice conical spray pattern at around a 20 to 24 degree angle. It is rated at 43.5 psi and the maximum pressure (measured between the fuel rail and the manifold) is 72.5 psi. Bumping the pressure up to 72.5 psi gives a flow rating of 84 lb/hr.

This chart shows the maximum power these injectors should be used to support for naturally aspirated and forced induction engines on both gasoline and E85 at 43.5 psi fuel pressure (you can extend this range by increasing the pressure). This chart assumes a maximum duty cycle of 85%, and the brake specific fuel consumption numbers used for the calculation are given in the chart. Numbers are rounded down to the nearest crank horsepower.

Here are some known applications for these injectors. Most will require tuning instead of being a "drop in and go," but they won't require fabrication, either.

BMW: M20, M30, M50, M52, S50, S52

Ford: 1986 through 1995 5.0 Mustang, 1992 through 1998 4.6 modular motor

GM: L98 TPI V8, LT1 and LT4

Mopar: 3.9, 5.2 and 5.9 Magnum through 1999,

These are likely to fit many VW, Chrysler, Porsche, Audi, Volvo, and some Subaru and Mitsubishi applications as well. We hope to expand this list soon, but if your application is not listed here, please check the size of your injectors before ordering. If you have a motor where the injectors physically fit the intake but the plugs don't match, we sell plugs for these injectors in both crimp on and pigtail varieties separately.

Even if your harness will not plug directly into these injectors, these plugs can be spliced into your harness to convert your engine to EV1 injectors as long as they fit your fuel rails and manifold. In that case these injectors wouldn't be plug and play, they would require a bit of splicing or crimping to existing wires.