Product Overview:
The popular v340 power package is the first step in our upgrade path. It is ideal for those who demand ease of installation and absolute stealth with a completely stock-like exhaust note. Through careful recalibration of the factory fuel and ignition advance tables, as well as revised rev and boost limits, we’re able to achieve a remarkable dyno-proven 40-45 flywheel horsepower gain on an otherwise stock Subaru Impreza STi. Also, by carefully remapping throttle maps and dynamic boost control parameters, throttle response and low end torque improve substantially. More importantly, these gains are safe and have proven to be capable of withstanding the rigors of heavy-duty competition use-- something few others can honestly claim.

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As with all of our ECU Reflash-based power packages, you will need to mail (or bring) your ECU to our Danville, CA facilities for the re-flashing of its ROM file. For removal and reinstallation directions, click here. If you chose to mail it to us, we can usually mail it back to you the same day we receive it, limiting your downtime to a matter of 2-3 days. If you bring it to us, you can even leave the ECU in your car since we can re-flash it through your OBD-II diagnostic port. This takes a matter of minutes and requires virtually no downtime of your car. Please specify 91, 93 or 94 octane applications.