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Thread: The Mega Supercharger 4AGZE thread, using twinscrew charger

  1. #331
    broken down ex guru Chief Engine Builder feral4mr2's Avatar
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    Default Re: The Mega Supercharger 4AGZE thread, using twinscrew charger

    Quote Originally Posted by trdee View Post
    god damn there's a lot happening in that engine bay johnny
    Yeah it's cool.

  2. #332
    Junior Member Backyard Mechanic jondee86's Avatar
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    Thumbs up Re: The Mega Supercharger 4AGZE thread, using twinscrew charger

    Yeah... when I see what you MR2 guys can cram under the hood, I get a bit embarrassed when I complain about not having enough room to put in a different type of bypass valve

    Cheers... jondee86

  3. #333
    broken down ex guru Chief Engine Builder feral4mr2's Avatar
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    Default Re: The Mega Supercharger 4AGZE thread, using twinscrew charger

    little project planned for later in the year...

  4. #334
    Junior Member Backyard Mechanic jondee86's Avatar
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    Thumbs up Re: The Mega Supercharger 4AGZE thread, using twinscrew charger

    After all the pissing about with the GFB bypass valve, I have finally kicked it into touch. Replaced it with this...



    That's the OEM bypass valve I grabbed off an old Subaru Legacy wagon at Pick-A-Part. Had to modify it a bit to fit in the same place as the Bosch/GFB valves. It's a two-chamber diaphragm valve with atmospheric pressure under the diaphragm and works as it should. Mechanically simple, inherently reliable, and enabled me to get rid of all the clutter I had with the GFB valve. OEM quality too

    And funnily enough, the annoying bang that I used to get every time I touched the gas pedal after being on the overrun has disappeared. Transitions into and out of boost are seamless. Now I just have to sort a misfire that happens straight after I hit the gas enthusiastically.... but my list is getting shorter.

    Cheers... jondee86

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