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 Mazda RX-7s
 Turbocharged NA
 harness and ecu
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Barnett87GXL
Apprentece

6 Posts

Posted - Oct 23 2010 :  10:25:54 PM  Show Profile  Reply with Quote
So i've been doing research and have been getting mixed information on the ecu and harness.

I would like to know if it is possible of use the TII ecu and harness on my s4 turbo/na with TII manifolds and sensors?
If so, will all the connectors on the harness inside the car connect and work with the stock N/A connectors?
Ex. the two yellow/orange connectors.

Aaron Cake
Administrator

Canada
6718 Posts

Posted - Oct 24 2010 :  11:00:05 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
Yes. As long as it is from the same series.
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Barnett87GXL
Apprentece

6 Posts

Posted - Dec 01 2010 :  8:01:29 PM  Show Profile  Reply with Quote
Thanks, I had just heard that it caused problems with the dash harness working right.
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Aaron Cake
Administrator

Canada
6718 Posts

Posted - Dec 04 2010 :  10:20:27 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
There are a few minor differences. On the TII, the alternator wiring is on the engine harness, on the NA, it is on the emissions harness. So you need to be aware of that and add wires as necessary. Also, the TII emissions harness has wires for the twin scroll and knock sensor.
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Barnett87GXL
Apprentece

6 Posts

Posted - Dec 05 2010 :  3:28:40 PM  Show Profile  Reply with Quote
So in ur opinion what harness do u think would be easier to use, TII or N/A?

I have both harness and am just weighing the pros and cons of using either of them.
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Aaron Cake
Administrator

Canada
6718 Posts

Posted - Dec 05 2010 :  5:05:32 PM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
Easier to use the TII harness if you already have one. But both require a few changes to be made.
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NMB123
New Member

1 Posts

Posted - Dec 07 2010 :  10:22:32 PM  Show Profile  Reply with Quote
I've been looking in to doing the same set-up and i've heard from a lot of people that it is easier to the N/A harness because the connection between the TII EMS harness and Front harness require some re-pinning for them to work together, is this true?
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Aaron Cake
Administrator

Canada
6718 Posts

Posted - Dec 12 2010 :  10:42:34 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
I have to stretch my memory here becuase it has been a long time, but I'm fairly certain that if you stay within your series, than there isn't much of a change needed betwen the harnesses to make them plug in. For one thing, I don't believe that the emissions harness (EM) connects to the front harness at all. The engine harness connects to the front harness and I think the only differences is the alternator wiring I have mentioned.

Almost all the swaps I have done are full standalones.
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