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Thread: Dump valve on Mps engine

  1. Default Dump valve on Mps engine

    Hi guy new on here and just wanted to kno if any of you guy hav fitted a dump valve to your mazda Mps and where any of you have had any running issues after fitting one cheers dave

  2. #2

    Default

    I was looking into the GFB fully adjustable BOV - check out their website and watch video's.

    you can run 80% recirc 20% vent etc - great design and gets nice reviews

    do not even consider full VTA, some people run 50/50 valves without issue also..

  3. #3
    Join Date
    Dec 2012
    Location
    Hills District
    Posts
    10

    Default

    Hi Guys,

    I was in GFB today (test fitted a prototype product they have coming soon) and grabbed a GFB Response while I was there.

    GFB Respons TMS T9002 BOV fitted to Mazda 3 MPS MY09 - YouTube

    Gotta say i love it so far. Took all of 5mins to install, and super easy to adjust. I currently have it set at 80% recirc and 20% VTA. Gave it one or two (or 10 or 20) good hits this afternoon, no stumbles backfires, stalls or anything.
    According to the GFB boys it's vital to adjust the pressure spring (with the included allen key) to avoid issues. You don't want to hear the long trailing noise or it's too loose.
    Looks stock(ish) and shouldnt attract too much attention

  4. #4
    Join Date
    Nov 2008
    Location
    North side, Vic
    Age
    37
    Posts
    6,745

    Default Re: Dump valve on Mps engine

    Quote Originally Posted by Davew81 View Post
    Hi guy new on here and just wanted to kno if any of you guy hav fitted a dump valve to your mazda Mps and where any of you have had any running issues after fitting one cheers dave
    Rate them, I had the hybrid unit. Just don't run full atmo vent.
    People will tell you it works but inn reality you are screwing your afr's.
    I ran 50 50 for years but I wouldn't push it any further.

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