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Practical Standalone Tuning: Step 2: Trigger Setup

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Step 2: Trigger Setup


00:00 - The next step in our process is to configure the trigger inputs, which is what tells the ECU what engine RPM is, as well as what cylinder is firing at any particular time.
00:12 The trigger system fitted to your engine will be very dependent on your engine type, and there are a huge range of trigger patterns available, depending on the engine.
00:22 So, the way we do this is we go back into our main set up, and this time we want to click on the Trigger tab.
00:31 Now, when we're using an engine that already has a predefined trigger mode, this is really straightforward, because all we need to do is choose the correct trigger type from the drop down menu.
00:42 So there's a huge range of predefined trigger types in that menu.
00:46 We're simply going to select Nissan VQ35 350Z, and our job's done! We also can independently select some options for both our trigger signal and our home signal.
01:02 This is going to depend on the type of signal, the type of input.
01:07 In this case, we can choose between Hall-effect, reluctor or custom, and we can also choose the trigger edge and we can adjust the filtering, if required.
01:18 In this case, we don't need to make any further adjustments.
01:22 The TDC offset angle, which you can see here is also a key aspect of configuring the ignition timing or setting the basic ignition timing and we're going to have a look at that in an upcoming step.
01:35 So, for now it's enough simply to know that that is there.
01:38 What we can do is we can test the triggering system to make sure we're getting some useful data from that system, and we're going to do that now.
01:50 First of all what we can do is we can go to the Fuel tab, and for this we don't really want the engine to attempt to start, so this is not, we were actually trying to start the engine for the first time.
02:00 So, I'm going to click on Disable Injectors, I'm going to apply that change and then I'm going key the engine off, and back on.
02:10 So now we've got the engine in a situation where it shouldn't start, because it's not going to be injecting fuel, and we can make sure that we're getting a valid trigger signal from the inputs to the ECU, and that the ECU can correctly decode them.
02:25 Now to do that, what I'm going to do is I'm going to add another page, I'm going to add the Diagnostics page, which gives us a huge amount of information about what's going on.
02:36 In particular, we're interested in the information that is being shown here.
02:42 So what I'm going to do now is we're going to crank the engine and we're going to make sure that we're getting a sensible RPM signal, and we're not getting any trigger system errors.
02:52 So, let's do that now.
02:56 OK, so while we're doing that, you can see that we weren't getting any trigger errors.
03:03 We're also getting a sensible engine RPM.
03:07 So, when everything's cranking, we saw, let's just do it again, we saw our Synchronization state saying run, and our Synchronization state saying full.
03:19 So everything there is working correctly.
03:22 The ECU is getting the information it needs, in order to run the engine.
03:28 So in this case, we're ready to move on to our next step.
03:30 An important point that can trip you up later is make sure you go back to the Fuel set up tab and re-enable the injectors, otherwise you can end up wasting a lot of time wondering why the engine doesn't start when you actually get to a point when you're ready to do so.

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