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Turbosmart
FCD-1 (pneumatic)
$124.99
$112.49
Turbosmart
FCD-2 (electronic)
$233.99
$210.59
Turbosmart
eB2 Spare 3 Port Solenoid kit
$166.99
$150.29
Turbosmart
eB2 66mm Roll Cage Mount
$96.99
$87.29
Turbosmart
eB2 Re-loom kit
$159.99
$143.99
Turbosmart
eB2 Microswitch
$61.99
$55.79
Turbosmart
eB2 66mm Dual Shift Black
$85.99
$77.39
Turbosmart
eB2 LED Orange
$11.99
$10.79
Turbosmart
eB2 4 Port Solenoid
$189.99
$170.99
Turbosmart
eB2 66mm Dash Mounting Kit
$96.99
$87.29
Upgrade, repair, or finish your boost control setup. Shop Perrin Pro electronic boost control solenoids for Subaru WRX, STI, Forester XT, Legacy GT, and Outback XT, plus Turbosmart eB2 and eBS parts, including 3-port and 4-port solenoids, a replacement head unit, re-loom harness, switches, LEDs, and 66mm dash and roll cage mounts. You'll also find Turbosmart Fuel Cut Defenders in pneumatic and electronic versions. Subaru solenoids are matched by model and year, and Turbosmart parts are built for specific e-Boost controllers, so confirm compatibility before ordering. All products in this category are for off-road and competition use.
The Perrin Pro electronic boost control solenoids replace the factory boost control solenoid on specific Subaru models. They're commonly chosen by tuned owners who want more precise and consistent boost control than the factory part provides. Each one fits a specific generation, so match your model and year carefully:
An upgraded solenoid responds differently from the factory part, so the ECU calibration typically needs to be adjusted to match.
The Turbosmart accessories are designed for the e-Boost2 (eB2) and e-Boost Street (eBS) controllers.
Solenoids. The 3-port solenoid kit commonly suits internal wastegate actuators and single-port external wastegates. The 4-port solenoid commonly suits dual-port external wastegates, where it controls both the top and bottom ports for firmer control at higher boost.
Head unit and wiring. The eBS replacement head unit restores a damaged or failed display. The re-loom kit replaces the wiring harness for repairs or a cleaner install.
Switches, LEDs, and mounts. The microswitch, orange LED, and 66mm Dual Shift parts support controller functions and indicators, while the 66mm dash and roll cage mounts let you position the controller where it's easy to see.
Many factory ECUs cut fuel if boost exceeds a preset limit, which protects the engine on a stock setup. A fuel cut defender limits the boost signal the ECU sees so the cut isn't triggered at higher boost. The FCD-1 is a pneumatic unit and the FCD-2 is electronic.
Because it overrides a factory safeguard, a fuel cut defender should be paired with a proper tune, fuel delivery that supports the added boost, and boost monitoring. On engines that can be fully tuned, adjusting the boost limit in the ECU is commonly the preferred approach.
Boost controller accessory questions usually come down to fit, whether a tune is needed, and what changed after installing a new solenoid or fuel cut defender. The answers below cover the most common problems, including boost spikes after a solenoid swap, check engine lights, erratic controller behavior, and fuel cut at high boost, plus how to choose between 3-port and 4-port solenoids. Subaru solenoids are matched by model and year, and Turbosmart parts by controller model, so confirm compatibility on each product page before you buy. For help with your boost control setup, talk with your tuner or contact our team.
Typically yes. An upgraded solenoid responds differently from the factory part, so the calibration is commonly adjusted to match.
Each solenoid fits a specific generation of WRX, STI, Forester XT, Legacy GT, or Outback XT. Check the year and model on the product page.
The 3-port commonly suits internal actuators and single-port wastegates. The 4-port commonly suits dual-port external wastegates.
It limits the boost signal the factory ECU sees so the ECU doesn't cut fuel when boost passes its built-in limit.
It removes a factory safeguard, so it should be used with a proper tune, adequate fuel delivery, and boost monitoring. Adjusting the boost limit in the ECU is commonly preferred where possible.
Common causes include a calibration that wasn't adjusted for the new solenoid or hoses routed to the wrong ports.
Generally no. They're designed for Turbosmart e-Boost controllers. Confirm compatibility before ordering.
