Haltech Elite 2500 in JDM EJ207 swapped WRX Wagon – Setup, Pitfalls, and Real Talk
Автор: Will Tune For Tacos
Загружено: 2025-04-30
Просмотров: 3122
This 2003 Subaru WRX wagon came to us with a JDM STi Version 7 EJ207 swap, still running on the stock USDM ECU. The customer wasn’t happy with the way it ran—or with the lack of features—so we ditched the factory setup and installed a Haltech Elite 2500 using their plug-and-play adapter harness.
Except… it’s not exactly plug-and-play for USDM cars. In this video, I walk through the full Haltech install process on a swapped WRX, including what changes are required to make the harness work, how to load a base map, and what to look out for in the default calibration. I also go into the early stages of tuning and some of the headaches that come with getting the car sorted.
This car is being built for rallycross and other rally-type events, so reliability and flexibility were key goals. The current motor was tired, but everything we did here will transfer over to a fresh long block without issue.
If you’re planning an EJ207 swap or a standalone ECU setup in your Subaru, this should help save you time—and frustration.
Got a weird JDM swap or a half-functional tune you’re trying to sort out? Drop a comment—I’ve probably seen worse, and if I haven’t, I’m curious. If you’re into rally builds, ECU puzzles, or watching someone actually fix things instead of faking it, hit subscribe and hang out. We get into this kind of madness often.
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