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  1. Mazdasloww3

    The fundamental flaw of the DISI?

    Saw a comment the other day from someone who claimed they knew a Ford powertrain engineer, and claimed they said that Ford didn't use the DISI (yes the Ecoboost is based on it, but not the same) because it was essentially a parts bin engine thrown together because Mazda really wanted to use...
  2. Mazdasloww3

    Anyone here taken a shot with those $80 Amazon/eBay "OEM" PRVs?

    Normally I wouldn't go to Amazon for a critical part, but $80 vs $220 for a damn valve is hard to argue against, and especially being able to get it overnighted. The few reviews are good surprisingly, just wondering if anyone here has done it. Edit: For anyone who stumbles on this in the...
  3. Mazdasloww3

    Anyone know how bad boost spikes on a k04 with a 3.5" exhaust are?

    Dumb question, I'll be the first to admit that. Was just gonna wait and do mani/big turbo and 3.5" exhaust all at once after all supporting mods are done, but my BATs are so damn high in south Texas on a gen 1 TMIC, completely neutering my speed, so gonna go ahead and get an e30 tune for the...
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