![]() ![]() ![]() ![]() Now I'm going to jump a little bit out of schedule here, or a little bit out of order, so we'll jump across to my laptop screen and I want to just show you a perfect example of an injector I was unfortunate enough to spend a lot of time in my early days using and pulling my hair out, which was the Bosch Indy Blue or Bosch 1600 cc injector. This can be the difference between an injector that provides a good control of the fuel delivery to get a stoichiometric air/fuel ratio at idle and cruise and one that ends up constantly with the engine stalling or fouling spark plugs because we're running pig rich at idle and there's absolutely nothing we can do about it. The other aspect which is just as important and often these two aspects are at odds to each other, is that we want an injector where we can get really good control of the fuel delivery, the fuel mass that the injector is providing, down at the small pulse widths that we're likely to see at idle, and even at cruise. So that's the first thing, getting an injector that can actually support our airflow or fuel requirements. The first thing is when we are choosing a set of aftermarket injectors we're going to need to make sure that the injectors can flow sufficient fuel to keep the engine's fuel demands under control.Īnd this comes down to of course, as we're modifying engines, we're trying to make more power, it's all about trying to get more airflow into the engine.Īs we get more airflow into the engine, we obviously need to add more fuel in order to keep our air/fuel ratio under control, that's essential if we first of all want to make the power that that additional airflow can provide and of course at the same time, want to keep our engine operating safely, we don't want our engine running dangerously lean, particularly if we're running with increased boost pressure. Now we'll go through some of this reasonably quickly and a lot of this is pretty self explanatory. ![]() So as usual we're going to have questions and answers, if there's anything that I talk about, please feel free to ask questions in the chat and we'll jump into those at the end. There's a lot of dedicated tables in a factory ECU which we're going to touch on during the lesson that you need to understand and you need to have the correct data to drop into those tables if you want to get the best possible results with a minimal amount of effort. It's no longer a case of being able to fit any old injectors we come across and then trying to get the engine to run. It's particularly getting more and more critical on factory ECUs when we are reflashing them. Now I think most people consider that this is pretty straightforward and to a degree it is however there are a few intricacies that you do need to understand if you want to be able to choose an injector that's going to, first of all work for your application and support the sort of fuel flow that you're going to be needing.Īt the other end of the challenge here is also getting the right data for your particular ECU and this can make the process of tuning so much easier. Hey guys, Andre here from High Performance Academy, welcome along to this week's webinar where we're going to be discussing some of the aspects that you should be keeping in mind when it comes to selecting injectors for your next project. ![]()
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