Im currently building a 99 motor that i will be dropping into my 94. I'm running Hydra 2.6 currently with no plans to upgrade to 2.7. When i install the new motor, id like to use the 99 cam angle sensor and crank position sensor and not transfer the 94 CAS. It seems relatively straight forward to tap into to CAS wiring to run the crank angle and cam position sensors individually. However, Im unsure of what settings I would need to change in Hydra for the trigger settings. This is what Im using currently:


Does anyone have the default settings from 2.6 or 2.7 they are using with a 99 motor, or perhaps the setting are tied to the car and the wiring harness vs the motor sensors themselves.

Lastly, has anyone successfully run a 36-2 trigger wheel on a Hydra 2.6. FM says its only for 2.7 but there are some trigger settings in 2.6 for 36-2 trigger wheels like a Toyota 36-2 4 cylinder setting. Not sure if anyone has messed around with that or not.

 

Anyone. I could always do trial and error but would prefer to eliminate some of the variables I will surely run into

 

Ken might be worth a shot to help.

https://www.miataturbo.net/hydra-58/...ervices-94594/

 

Thanks but I tried that route already.

I was really just hoping someone running Hydra on a 99 could tell me what their trigger setting is. Im pretty sure the 2.7 setting is probably the same as 2.6 so even someone running 2.7 could help.

 

The 36-2 miata trigger is specific to the Miata. If its only available in 2.7 its only available in 2.7. The stock 4 tooth may be possible in 2.6

 

Yea at this point Im focusing on getting the 4 tooth trigger to work and it should considering there were probably a lot of people running 2.6 on their 99-00 FMII cars.

My plan is to tap the 99 Crank angle sensor and cam position sensor into their associated signal lines on the 94 4-wire CAS plug. It sounds like that what most people do who want to use the newer sensors vs. transferring the CAS to the 99 head. Perhaps the current trigger settings I have will work fine so long as Crank and cam signals from the individual sensors are being sent to the ECU.

 

Here is a screenshot of my Hydra 2.7 ignition triggers on a 1999 1.8 motor.

 

Interesting... wasnt expecting to see generic 12 tooth. Are you actually running a 12 tooth trigger wheel or the OEM 4 tooth?

 

Wait a sec, totally fucked that up. That is the default setting. I didn't load the base map file properly.

Updating the image now.

That is from the Hydra software on my laptop and the base file I'm currently using on the car. I'll connect to the Hydra on the car when I get home and see if it is different.

 

Thanks! My 2.6 has a Miata double trigger type as well. Still curious though why it would be referencing double tooth if the 99 has a 4 tooth trigger wheel?

 

No idea. I didn't do the initial install on this car with the FMII kit or Hydra. Just been trying to get it running right.