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  1. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    That’s why the smoke and pressure test wasn’t working, the check valve from the intake to the catch can was preventing the smoke and pressure from being seen. Sent from my iPhone using Tapatalk
  2. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Found the problem. Ended up being the catch can not being sealed. Sent from my iPhone using Tapatalk
  3. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Stock MAF and the NTK o2 sensor (I believe that is the stock sensor from rock auto) Sent from my iPhone using Tapatalk
  4. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Battery is most definitely good. At one point I did think low voltage could be an issue but I ruled that out for sure. Battery holds 12.5 to 13 and alternator puts out 14.2. Sent from my iPhone using Tapatalk
  5. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Yes sir I did. What’s weird is that it runs rough at idle, I blip the throttle and it works perfectly and I can take some logs if that will help. Sent from my iPhone using Tapatalk
  6. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    I haven’t cleaned the throttle body, but my logs aren’t showing that it’s sticking. But I think that might be worth looking into. Sent from my iPhone using Tapatalk
  7. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Yea man pressured it up with bubbles and added smoke. I did find some leaks but nothing significant. I had the problem before and after I did any modifications, I was hoping when I had the engine out and and making repairs and adding my go fast parts it would sort itself, but it didn’t. I’m...
  8. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Look man I’m not here to discuss that, I’ve done what the video did I just added smoke to the pressure. Trust me there are no leaks. I’m thinking I have a stuck one way valve or something. My first thought was the purge valve, but that’s not it. Also I’m not having a boost problem whatsoever...
  9. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Just like I though, same thing. I just added smoke so the leaks were more visible. Sent from my iPhone using Tapatalk Look at the video the other guy posted, definitely the same thing. Sent from my iPhone using Tapatalk
  10. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    2008 Mazdaspeed 3 111000 miles Houston Texas Likely has a vacuum leak, fuel trimes max out and it runs lean and then when I blip the throttle it goes back to normal. When I’m exiting the freeway and get out gear the engine hunts to find idle until I blip the throttle. P0300random misfire, p2188...
  11. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Yes it is, and I’m not having problems with boost I’m having a problem at idle. Sent from my iPhone using Tapatalk Please explain to me what a boost leak check is. Sent from my iPhone using Tapatalk
  12. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Yes I smoke tested the entire system Sent from my iPhone using Tapatalk
  13. S

    [SOLVED] High STFT at idle but when I bill the throttle it goes back to normal.

    Ok so I’ve been tracking down a fuel trim problem. When sitting at idle sometimes my STFT’s jump to 25 but when I blip the throttle it goes back to normal. When I’m driving the STFT’s are back and forth but not quite as bad, and when going back to idle after exiting the freeway the RPM’s hunt...
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