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Most of the engine harnesses that come with the 4age 20v, or any jdm motor for that matter, are hacked up to one degree or another. Not a lot of care is taken in Japan to remove these motors with all wiring intact.
There is a good bit of added expense in getting a complete/uncut 20v harness. You would either have to buy a full swap set, and pay a premium for buying this way, or buy the harness seperately which will run between $150-$250. Often times, the cheap harness you get will be the type that only has 2 ecu plugs, which makes it only a little bit better than the cut harness.
I can work off of a VERY butchered harness. As long as the two main plastic casings are there (the grey one by the injectors, and the main black one that runs under the itbs), I can make it work without much trouble.
I can also wire any 20v to use the blacktop ecu. This ecu uses a map sensor instead of an AFM which is what makes it possible to run open throttles and velocity stacks. The revlimiter is also higher, and the topend performance also seems to be a bit better.
It is no extra trouble for me to wire for a BT ecu. Just let me know if you need your harness set up this way.
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