2004 Subaru WRX Performance Chips
- AEM® - ECU Extension / Patch HarnessSubaru WRX STI 2004, ECU Extension / Patch Harness by AEM®. This harness will allow you to connect ancillary electronic devices like turbo timers and data loggers into the engine management system without having to cut and splice into your...Our price: $187.32$187.3220% OFF
- JET® - Computer ChipSubaru WRX 2004, Computer Chip by JET®. Computer Upgrade Kit. The JET Performance Import Computer Upgrade Package is the solution to performance tuning import and domestic sport compact vehicles. Import computers do not have computer chips that...Our price: $299.25$299.2520% OFF
Posted by Jeff G.
"I had no problems installing Superchips. I have seen a marked improvement in my gas mileage around town and have not been out on the road to check its performance in that situation. I'm very pleased with the product as of now. Jeff Glenn"
Posted by Lorna J.
"I recently got the Edge Evolution and I enjoy it a lot, it's really got for showing Gauges. If noticed my performance went up a little quicker response times."
Posted by Ernest T.
"I have owned the Cortex and this does the exact same thing. This one can only be used on one vehicle, that is the only difference. Woke my Denali right up, it has never run so good."
Posted by Josh K.
"Installed in my 2011 Sierra with the custom dash mount, took about 20 min to get everything in and working. Very easy to install and looks great! Several custom tunes to choose from on the device, or go to Edge website and download others."
Posted by Randy F.
"It got to my house quick; was easy to install, and allows for speedometer adjustment for tires! I had to read my speedo 10 miles faster than what it said before! Not anymore!"