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Sick tri-rotor

Old 05-14-19, 08:14 PM
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MN Sick tri-rotor

Hey guys,

I have a 94 RX7 with a Tri-Rotor built by Defined Autoworks. I'm struggling to get it to run right. Please check out the following video where you can hear it run and see the gauges:
https://www.youtube.com/watch?v=meeZeywTnN8&feature=share

Any constructive input would be appreciated.

Thanks,

Erik
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Old 05-14-19, 09:19 PM
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What sort of engine management and tune?
Need a lot more info. Doesn't sound like it's been tuned to me.
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Old 05-14-19, 10:52 PM
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Electromotive Tec3R. Tune by Defined Autoworks (I believe).

I'm resurrecting an old laptop with a serial port so I can connect to the Tec3R. Is it possible that the tune was deleted off the Tec3 R somehow?

I was able to get the original tune from the prior owner of the car. Would be great if I just need to reload the tune. I just need to somehow learn how to work with the Tec3R.

Thanks for the help guys. Really hoping to help my son get this car running right again.
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Old 05-14-19, 11:20 PM
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I'd swap the ecu. It was decent a long time ago. A 3 rotor deserves better now. Keep it protected with fail safes.
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Old 05-15-19, 06:06 PM
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Not familiar with that ecu but it should keep the tune without an issue. I've used the usb to serial adapters with good luck if you can't get an old laptop working. What's the history on the car? bought it like this or did it run right at some point? Changed anything after you got it? If it's sat for a long time pull the plugs and have a look/replace them but it sure sounds like a tuning issue. Oh also make sure the plug wires are going to the proper leading and trailing locations.
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Old 05-16-19, 09:03 AM
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"I'd swap the ecu. It was decent a long time ago. A 3 rotor deserves better now. Keep it protected with fail safes."

regardless of what is currently going on i strongly suggest you enter the 21st century and dump the Tec3.

running a 3 rotor w a Tec3 is like having a Ferrari with a Vega 4 cyl.

recommend either a Haltech 2500 Elite or AEM Infinity.
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Old 05-16-19, 09:53 AM
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Originally Posted by Howard Coleman CPR View Post
"I'd swap the ecu. It was decent a long time ago. A 3 rotor deserves better now. Keep it protected with fail safes."

regardless of what is currently going on i strongly suggest you enter the 21st century and dump the Tec3.

running a 3 rotor w a Tec3 is like having a Ferrari with a Vega 4 cyl.

recommend either a Haltech 2500 Elite or AEM Infinity.
Agreed. You will find much more support for a Haltech as well as be able to utilize a world of safeties.
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Old 05-18-19, 08:35 AM
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Do a compression test, you are only pulling 10” vacuum at 3k rpm. Don’t dump any money on an ECU until you determine that the engine is healthy. Make sure all the coils are firing as well as the injectors.
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Old 05-19-19, 07:26 AM
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Could also be vacuum leak with low vacuum reading!
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