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  1. Newbie Section
    The stock coolant cap on the car is a 16 psi rated cap, every part website online says 15psi fits my car. Im looking all over the place online for a replacement but I’m having trouble because I can not find the exact 16 psi cap. Will the 15 psi work fine(it is only 1 psi off so it’s close). It...
  2. cai

    Newbie Section
    why would i need a vacume line in a cold air intake and how does it work. also could i just block the vacume lines and any others off?????
  3. Mazda6 (Atenza)
    I have a 2009 Mazda 6 I sedan that I just bought over a year ago. It has a 2.5L, 4 cylinder engine, I want to make it faster but I don’t know where to go or what to do in order for it to have a real difference in my speed. I know that some other cars similar to mine or the same as mine come with...
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