수리 사례

2026. 6. 30. 작업

증상

02 WRX loss of power/boost

처리 내용

I would guess you have a boost leak. Have the car smoke tested to check for leaks in the intake system (bring it to a shop that knows Subarus, there's a lot of nuance to look for). If it's been properly modded, it will have a tune for those mods, otherwise you'll risk damaging the engine in short order. Since the car's been running for years, it likely has a custom tune for the mods (or perhaps just an off-the-shelf tune that comes with the AccessPort, which is better than nothing), especially since the mods are a large turbo and a larger exhaust. There is a poor-man's boost-leak test that involves plugging the intake (a pint-sized paint can works well I think), pulling the vacuum reference line to the bypass valve (the small hose), blowing into it, and then covering it with your thumb. After a couple seconds, letting off with your thumb should result in some of the air you blew in escaping back out. If that doesn't happen, you have a vacuum/boost leak somewhere. Alternatively, if you