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  1. K

    Relation between displacement, boost, and power

    Okay, 1 bar= 1 atmosphere= 14.5psi Adding 1 bar of boost to an engine effectively doubles its displacement. At 10 psi, I boost 71% of 1 bar. My effective displacement should be about 3.4 liters. I know there's more to horsepower than just displacement, but most 3.4 liter engines make...
  2. K

    Using a protege 5 exhaust

    I was browsing craigslist, and came accross a guy seeling a used greddy catback for a protege 5 for 100 (new 550-600). So my question is: is it at all practical to make it fit on my mazdaspeed? I know protee 5 pipes are shorter, and I have seen some evidence that the stockers are of narrower...
  3. K

    switching form bpv to bov

    Ok first off I really looked to see if there was already a thread for this but couldn't find one. If there is just link it and I will smack the back of my head for you. having said that. I am researching as much as I can into getting a fmic. Because I am consistently short on cash I'm just...
  4. K

    ram air

    I have an injen CAI for my 3.5 MSP so the filter has been placed low in the driver side fender. A friend and fellow car guy suggested that i make the non functional "mesh looking" piece of plastic functional by either cutting out the spaces between the mesh or by just removing the piece all...
  5. K

    overboost

    I have an 03.5 MSP and have noticed the following on my boost gauge 1st-4psi 2nd-10psi 3rd-13psi 4th-15psi I know the factory settings are 7psi so idk whats going on here I'm the third owner of this car so I have considered some knuckle head monkey business, but for the life of me I can't find a...
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