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  1. General Maintenance, Troubleshooting & Accidents.
    2004 WRX 2.0 4A I recently put in the Grimmspeed 3 port boost control solenoid(I know it says to get a tune I'm just lazy), never tuned it but my boost would go up to 15psi and drop to 5-10 psi then right back up to 15 and back down to 5-10. Quite annoying, then all of a sudden it won't go over...
  2. General Maintenance, Troubleshooting & Accidents.
    Hi guys, As you can tell from the title, my 2004 Subaru WRX is throwing a P2431 and P2433 codes which are both related to Secondary Air Injection System. Now I'm debating on if I should completely delete it or try and replace the part of the system that is faulty. What would make more sense to...
  3. Transmission & AWD
    I have a 2004 WRX wagon 5 speed with about 92,000 miles. All stock except the wheels. Everything is working well except the clutch... It's slipping a little if I engage to quickly going into 1st. Most of time if I let off the pedal gently then accelerate it doesn't slip. Should I have the...
  4. Engine Modifications
    I have a phase 1 22t block that I plan to put into my 04 WRX sedan, I am curious if I should use the heads off of my stock ej205 or I could use some 251 heads with Delta 1500 cams that's have been port and polished, I've heard the 251 heads will require modification and some wiring to make them...
  5. Everyday Impreza Talk
    New to the forums and couldn’t really find a proper place to ask about this, but is there something with footwork i can do to add a couple pops and crackles to my daily driving? I have an Invidia n1 catback exhaust. I know everyones gonna tell me I’m stupid and ruining the car and blah blah...
  6. Maintenance, service, and repair
    Alright, so Im fairly new to car mechanics but I’m very interested in learning how to build cars, so my friends and I bought a rolling body of a 2004 Impreza wrx for 700, no engine, a trans that is presumably stuck in first gear, and I really don’t know a whole lot about the engine bay and what...
  7. General Maintenance, Troubleshooting & Accidents.
    I'd like to start by saying that any help would be greatly appreciated. Not too far from me, I've found on FB marketplace a 2004 WRX Wagon has 118294 miles on it and minor mods, imo. With a snapped timing belt. According to the guy I've talked to, it snapped while doing a highway cruise and it...
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