kevin p Posted December 1, 2023 Report Share Posted December 1, 2023 Hi All, Question on the using resistors for low impedance injectors? I'm running a pair of high impedance injectors for the primary and low for the secondary. I've added a pair on resistors to the low impedance injector only. Now I'm having a problem with fueling. The primary would just cut as soon as the secondary comes in. I would like to confirm that's the reason for the issue. I'm using 10 ohms btw. File and log attached https://drive.google.com/file/d/1RMtK22XJQxTKi3X3mp5CcVESugRanVeg/view?usp=sharing https://drive.google.com/file/d/1xnu1uo3kvE0iN9yUosdx36kCZdkfsEfC/view?usp=sharing Thanks Kevin Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 2, 2023 Report Share Posted December 2, 2023 A 10 ohm resistor doesnt sound correct. The help file says to use a 2.2ohm if the injectors are less than 2ohm, or a 4.7ohm if the injectors are between 2-6ohm. But that will not cause any "cut". Your log also doesnt show primaries being cut, obviously their PW will drop a lot because your staging table is telling the ecu that you want to deliver 70% of the fuel through the secondary injectors. Your short PW adder table looks wrong for the secondary injec tors also. Quote Link to comment Share on other sites More sharing options...
kevin p Posted December 2, 2023 Author Report Share Posted December 2, 2023 Thank you, Adam, Just to be clear, the resistors that are wired to the low impedance injectors will not affect the high impedance ones as they are on the same power source? The pulse addition in the chart below is what I used for the short pulse width adder. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 2, 2023 Report Share Posted December 2, 2023 correct. Quote Link to comment Share on other sites More sharing options...
kevin p Posted December 2, 2023 Author Report Share Posted December 2, 2023 Cool, thanks. Quote Link to comment Share on other sites More sharing options...
kevin p Posted December 6, 2023 Author Report Share Posted December 6, 2023 I'm still having an issue with low ms on the sec injectors. The injector sheet 2 post above states min pw should be set to 1.3. When the staging 56% the secondary are not on, no pw. When it get to 62% the secondary pw is only .7. Files attached. https://drive.google.com/file/d/1PaD4_eNYHYMbObLhxbDgKTIaKB6jfULU/view?usp=sharing https://drive.google.com/file/d/1Z3IQ0R4GOR645ampgWFHveskJTIlKyJd/view?usp=sharing Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.