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  1. Engine Modifications
    This is the big BOV thread. If you didn't find this thread, you didn't search. This thread is where all BOV question threads get merged into. The quote below in this first post is from our BOV info sticky and contains links to some very explanatory BOV information. Please take the time...
  2. Tuning: Electronic Engine Management
    Hello everyone! I'm new to this forum and i was hoping i could get some advice and maybe i could learn a thing or two while im here. To start with i have a; 2007 wrx wagon 2.5L dohc H4 current engine mods are; Stage 1 cobb OTS tune STI lower block GFB blow off valve catless downpipe and...
  3. Engine Modifications
    Any pros and cons?
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