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 Post subject: Pnp standalone
PostPosted: Wed May 02, 2018 8:16 am 
First Gear
Joined: Sun Jan 22, 2012 8:16 am
Posts: 128
Location: Yakima WA
So I am about to order my ecu I have decided to go with a haltech elite 1500 there is the option for a plug and play harness that I was considering getting my question is do I need to treat the wiring like I am doing a rob tune install minus the ignition conversion because the haltech can be set up as wasted spark

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 Post subject: Re: Pnp standalone
PostPosted: Wed May 02, 2018 5:59 pm 
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Joined: Tue Oct 15, 2002 11:37 am
Posts: 27313
Location: Houston, Tx
Can you provide some more information about the plug and play harness?

Does this allow you to plug in the stock ECU plugs to the Haltech or does it allow you to plug in the stock ECU plugs to this adapter and then you have to wire the Haltech to the adapter?

I had an adapter kind of like what I described above for my Link install. Below are pictures.

http://main.experiencetherave.com/subar ... install/05

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 Post subject: Re: Pnp standalone
PostPosted: Wed May 02, 2018 10:19 pm 
First Gear
Joined: Sun Jan 22, 2012 8:16 am
Posts: 128
Location: Yakima WA
This is the kit I am going to get https://www.haltech.com/product/ht-1509 ... iberty-rs/

It has the harness that plugs directly into the ecu and directly to the adapter plug so before I wire in my meth injection and my intake air temp sensor the sockets should be pinned as a stock ej20g ecu

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 Post subject: Re: Pnp standalone
PostPosted: Thu May 03, 2018 5:25 pm 
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Location: Houston, Tx
If you're planning to use this for an ej22t equipped North American Legacy some of the pin outs are not going to be exactly right. I would suggest asking them if they could send you a pin out of how they have things wired in the adapter and if they could build a custom adapter. If not, you'll need to modify the wiring on the chassis side for those pins that don't match up.

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surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


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 Post subject: Re: Pnp standalone
PostPosted: Fri May 04, 2018 2:31 am 
Second Gear
Joined: Thu Oct 27, 2011 5:09 am
Posts: 460
Location: Dirt Roads, Colorado
The haltech PnP harness uses the same 4 plug ECU connections found in the legacy, however it's wired for an ej20g ECU.

For this to work you will need to adapt the ej22t harness to work with an ej20g ECU. Following the steps for a RobTune ECU install will be the same.

Haltech provides wiring diagrams with the harness and ECU so will know what goes where.

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 Post subject: Re: Pnp standalone
PostPosted: Fri May 04, 2018 2:46 am 
First Gear
Joined: Sun Jan 22, 2012 8:16 am
Posts: 128
Location: Yakima WA
Yeah I called haltech earlier today to ask them and they said it was pinned the same as an ej20g. From the I/O pin outs from the ej20g and the ej22t that I will be using they all match up so I'm going to go ahead and order it with the patch harness. I will check back in once I get it installed and let anyone who is interested if it just plugs in and works or if there is anything else that needs to be done.

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 Post subject: Re: Pnp standalone
PostPosted: Sun May 13, 2018 1:00 am 
First Gear
Joined: Sun Jan 22, 2012 8:16 am
Posts: 128
Location: Yakima WA
So the kit is plug and play and the only wiring change I had to make is for my intake temperature sensor I've reassigned the maf signal wire to take car of it. I put the sensor in the bottom of the throttle body I thought thats where it would heat soak the least. Image

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