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Thread: Wtb: forged rods/pistons, split second afc(msp)

  1. #1
    Registered Member dstmsp03's Avatar

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    Wtb: forged rods/pistons, split second afc(msp)

    Looking for forged rods and pistons (k1 preferred ) and a split second afc, v1 or v2.. not looking to spend a ton.. just want these more for reliability in the engine since these things are like toothpicks.
    Looking for fsde msp stuff
    Thanks
    Last edited by dstmsp03; 04-20-2017 at 08:29 PM.

  2. #2
    Certified Mazda Tech hornsfan10609's Avatar

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    Just a heads up, with a forged motor you can run more boost and you won't need the piggyback AFC.
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  3. #3
    #1297 speedin's Avatar

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    Sorry to thread jack, but Hornsfan are you saying with forged internals and increased boost the car kinda corrects its rich/lean (I can't remember which way our MSP goes) problem?
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  4. #4
    Registered Member dstmsp03's Avatar

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    that's 100% inaccurate!!
    I am not new to the mazdaspeed.. I have had mine since 06.. it has 60K miles on it.. the factory tune is pig rich to help the crap toothpick rods.. mazda slapped this motor together without enough R&D to compete with dodge and Mitsubishi. you can run increased boost on stock tune with upgraded internals yes.. but forged internals in no way corrects the crappy stock fuel trim.. to really run this car safely with a decent amount of boost.. 12-15 psi.. you need some sort of air fuel management... along with the forged internals. some people are running over 10 psi on stock internals.. however.. and ive said this many times. that car is a ticking bomb if they continue.. since the factory wastegate actuator can fail so easily and cause a boost spike.
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  5. #5
    Swollen Member Natey's Avatar
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    Stock internals, not a stock wastegate or turbo.

    If you're going to spend all that money on building up the engine, why not spring for a haltech or something? Disco potato it.
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  6. #6
    Certified Mazda Tech hornsfan10609's Avatar

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    Quote Originally Posted by dstmsp03 View Post
    that's 100% inaccurate!!
    I am not new to the mazdaspeed.. I have had mine since 06.. it has 60K miles on it.. the factory tune is pig rich to help the crap toothpick rods.. mazda slapped this motor together without enough R&D to compete with dodge and Mitsubishi. you can run increased boost on stock tune with upgraded internals yes.. but forged internals in no way corrects the crappy stock fuel trim.. to really run this car safely with a decent amount of boost.. 12-15 psi.. you need some sort of air fuel management... along with the forged internals. some people are running over 10 psi on stock internals.. however.. and ive said this many times. that car is a ticking bomb if they continue.. since the factory wastegate actuator can fail so easily and cause a boost spike.
    The forged internals don't do anything to change the tune, but increasing the boost leans out the AFRs, which negates the need for a tune.

    I have a forged engine running 16-18psi and the AFRs are around 11.5-12 in boost which is still a bit rich but safe for the old ECU in these cars. I know what I am talking about, it is in no way inaccurate.
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