Electredge Posted August 25, 2020 Report Share Posted August 25, 2020 I'm not really sure which trigger pattern to choose, I'm attaching a map and a log as well as a trigger scope. Thanks for the help Startup.pclx TriggerScopeLog - better crank.llgx the log is too large for me to add it... Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 26, 2020 Report Share Posted August 26, 2020 Man that is a weird one, it has the normal NB and later cam pattern but with 36-2 on the crank? 36-2 is generally a toyota pattern and I've never seen mazda use it. Is there any chance this has an aftermarket trigger wheel fitted? Assuming it doesnt have VVT then I think the set up below should work. If it has VVT I think it would need a dedicated trigger decoder written. I have no idea what the offset will be. If you get trigger errors or errratic RPM when cranking with the set-up below then do us another triggerscope. Quote Link to comment Share on other sites More sharing options...
Electredge Posted November 3, 2020 Author Report Share Posted November 3, 2020 I ended up cutting the teeth off the cam gear to get the project car from my original post above completed and it worked out well. Trigger Scopes below are for upcoming projects. I have multiple NB miata projects upcoming above is an OEM NB trigger pattern and below is 36-2 replacement trigger wheel with the OEM cam signal Can these trigger patterns be made? Many of the miata's will not be so into cutting 2 teeth of the cam wheel. Thanks for the help Jon Etheredge Electredge Wiring Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 3, 2020 Report Share Posted November 3, 2020 The two trigger modes below work with the oem pattern, one for the cars with VVT and the OBD2 is for the non vvt models (same pattern, just one has a movable cam). The 36-2 set-up should work with the cam window option that I mentioned above, assuming no vvt. Quote Link to comment Share on other sites More sharing options...
Electredge Posted November 4, 2020 Author Report Share Posted November 4, 2020 18 hours ago, Adamw said: The two trigger modes below work with the oem pattern, one for the cars with VVT and the OBD2 is for the non vvt models (same pattern, just one has a movable cam). The 36-2 set-up should work with the cam window option that I mentioned above, assuming no vvt. Thanks Adam, the 36-2 is a common trigger wheel upgrade for miatas since flying miata sells the kit. if its not hard to add I'd appreciate having the option to use it. one of the small local tracks here in town is home to probably 50+ miatas and many more that don't leave the car out at the track. I'm trying to no longer be forced to tune with megasquirt for any reason, I've converted over 2 of them so far... baby steps and thanks again for all the help Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 4, 2020 Report Share Posted November 4, 2020 Are they VVT or not though? If no VVT it will work as is with no changes. If they are VVT then we will need a 3 channel scope capture of Cam, crank and spark #1, with the cam fully home and another with cam fully advanced to be able to generate a trigger mode. Quote Link to comment Share on other sites More sharing options...
Electredge Posted December 4, 2020 Author Report Share Posted December 4, 2020 On 11/3/2020 at 7:49 PM, Adamw said: Are they VVT or not though? If no VVT it will work as is with no changes. If they are VVT then we will need a 3 channel scope capture of Cam, crank and spark #1, with the cam fully home and another with cam fully advanced to be able to generate a trigger mode. Yes the cars I'm working to build a setup for are VVT motors, what would I need to do to get this trigger pattern added to the firmware? is this what you need https://drive.google.com/file/d/1ZCfRxFFnckTGW4THmdxr70g4xY3I8Cv4/view?usp=sharing Quote Link to comment Share on other sites More sharing options...
koracing Posted December 4, 2020 Report Share Posted December 4, 2020 I think they would need the scope capture on the Link ecu scope functoin to see what they need to see. I've also tuned my fair share of Miatas on Megasquirt and would definitely prefer to not have to do that any more. I've converted a couple of cars from MS and Hydra to Link so far. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 4, 2020 Report Share Posted December 4, 2020 On 11/4/2020 at 2:49 PM, Adamw said: If they are VVT then we will need a 3 channel scope capture of Cam, crank and spark #1, with the cam fully home and another with cam fully advanced to be able to generate a trigger mode. Need a scope capture at crank speed and one at fast idle as many of the mazda sensors flip polarity around idle speed so if it does flip we need to know which edge doesnt move in relation to TDC/spark. If you cant do one with cam fully home and another fully advanced, then just a capture at home and a mechanical measurement of how far the cam can advance will be sufficient. Quote Link to comment Share on other sites More sharing options...
koracing Posted December 4, 2020 Report Share Posted December 4, 2020 Would it be feasible to start the car with the 36-2 wheel on the Link with the ecu in batch fire mode and then still capture the cam scope with the VVT solenoid unplugged, and then again with it at 100% duty? Or would getting a scope on a running car using some other ecu be preferred? I'm trying to remember if I have any local customers running this setup on a Hydra. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 5, 2020 Report Share Posted December 5, 2020 If the coils are wired wasted spark then yes you could run it with no sync to get a capture. Otherwise you can run the engine fully sequential as I mentioned earlier using the cam window sync mode. This will at least give you the home position scope, it may freak out when the cam is moved but Im not sure. Quote Link to comment Share on other sites More sharing options...
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