Originally Posted by rx_treme

The best injectors out right now are the Injector Dynamics 1000cc high imp. they perform better than the rest both at extremely low duty cycle and extremely high pressure all while atomizing better.

Originally Posted by Bmotorsports

The injector dynamics 1000cc injectors have a very good reputation and are custom modified Bosch EV14 injectors. The EV14 injectors have very good properties for a high impedance injector but keep in mind that the low impedance Bosch and Siemens injectors are faster to open because they are low impedance peak and hold injectors.

These peak and hold injectors are hammered open with a peak current and then held in their open position by a lower holding current, this is why many low impedance injectors have faster response times as compared to high impedance injectors. This is changing due to some very new injectors and piezo / ultra lightweight designs but most peak and hold injectors currently still have better low pulsewidth control due to the electrical control method.

Originally Posted by 2a_ron

This is basically out of date with the newer saturated designs that most injector manufacturers have been using. The injector dynamics ev14's have much better low pulsewidth control than just about all peak and hold injectors. They are linear down to 1.2ms and all the way up to 95% duty cycle allowing for more fueling from the same size injector, plus you don't need to deal with adding resistors or peak and hold boxes, just plug em in. Not to mention the atomization and matching benefits achieved with the ID injectors as well. The 1000's would be perfect for an 800hp e85 setup and will be able to supply more fuel as needed by using a higher base pressure (the ID1000's flow 1525cc at 100psi base).

Originally Posted by Bmotorsports

The Bosch EV14 injectors are very good injectors and they fall into my statement above regarding the newest generation of injectors:


The Injectors Dynamics 1000cc injectors are modified EV14 pieces. Now I should correct myself and state that I do not specifically know that the Injectors Dynamics 1000cc injectors are faster or slower than the low impedance injectors I mentioned because I have not dynamically flowed both injectors back to back. As a general rule, my statement is still valid for most of the performance injectors available that are often prior generation. I should also point out that battery voltage and driver design can cause variance.

Our company stays away from "modified" or "custom injectors" and we stay with oem quality components because frankly there is a lot of junk out there. Given the poor performance of so many "modified" injectors there are few I would trust a solid $15k+ engine with. After reviewing the calculations and data from Injector Dynamics, I am impressed. Paul has created a lot of good documentation and helpful tools to help those who understand how to use those tools.

I should also point out that the figures you quoted are lower than the documentation I saw for those injectors which states:

Either way, both solutions should work well and we may carry these higher flow EV14 injectors in the future. At the very least we will certainly take the time to evaluate these Injectors Dynamics 1000cc EV14 injectors at an engineering level rather than an anecdotal level.