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Running dual tunes

Posted by tindall2006, Dec 17, 2007

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  1. tindall2006

    tindall2006 Proven Member

    Joined Dec 26, 2006
    Huntsville, Ohio
    Ok, I have searched forever, and I know there are dual boost controllers. My question is do they make SAFC's that can hold multiple tunes? So you can run low boost when cruising around to save on fuel economy, and be able to flip it up on the fly if you want to run someone?
  2. thekellbeast

    thekellbeast Proven Member

    Joined Jun 28, 2003
    Portland, Maine
    I know I say it all the time, but the best, easiest, friendliest, ... best tuning solution is DSMLink. You use a latop to tune, not a little electronic box or anything. You can save multiple ECU setting files for race gas or E85 or pump, whatever. It's kind of expensive though, but it is easily the best purchase you can make for your DSM.

    Except a 6 bolt, if you have a 2g. Oh yeah, fill out your vehicle profile.
  3. turbolover10

    turbolover10 Proven Member

    Joined Jun 20, 2005
    Orlando, Florida

    Dsmlink is worth the extra $$!!

    Street Build 1K  0

    1997 Mitsubishi Eclipse GSX
    manual · 2G DSM
  4. Toxicangel

    Toxicangel Proven Member

    Joined Sep 23, 2006
    Watsonville, California
    With the AFC you cant. With dsmlink you can but you need to have a laptop in your car or at least a palm pilot to switch between tunes

    254  0

    1997 Mitsubishi Eclipse GSX
    manual · 2G DSM
  5. BoostFrenzy

    BoostFrenzy Proven Member

    Joined Sep 29, 2006
    Santa Monica, California
    Go to the link my friend. It will do EXACTLY what you are asking about. AND on top of that, let you mess with your timing.

    878  0

    1998 Mitsubishi Eclipse GSX
    · 2G DSM
  6. matthewdesigns

    matthewdesigns Proven Member

    Joined Dec 29, 2006
    Colo. Springs, Colorado
    I'm pretty sure the SAFC2 has a memory for 2 correction "maps". The SAFC1 does not.
  7. tindall2006

    tindall2006 Proven Member

    Joined Dec 26, 2006
    Huntsville, Ohio
    Nice... I have always wondered that. so basicly keep an extra laptop in the car and you will be good to go. I am NA right now, but am hopefully going to get a AWD Talon soon.
  8. c4uldr0n

    c4uldr0n Proven Member

    Joined Oct 21, 2006
    Superior, Wisconsin
    With DSMLINK you can import/export as many tunes as you would like, I also vote DSMLINK. I am a proud owner and it helps way more than a SAFC/MAF-T tuning device.

    -Korri / c4uldr0n
  9. turboglenn

    turboglenn Proven Member

    Joined Nov 5, 2007
    RIpley, West Virginia
    if you map the car right you won't need 2 tunes to do what you're wanting. It's hard to explain untill you've messed with either a cell type system (like megasquirt and AEM) or a graphng style (like the haltech) But, basically you have it tuned conservative on fuel/spark at lower boost settings then tune the upper boost levels for a safe rich AFR. That way when the boost is turned down you will be running those areas that you set to be "conservative" but when you step the boost up the mapping is already there to handle the duties of providing spark and fuel exactly how you set them.
  10. 95blackGsTurbo

    95blackGsTurbo DSM Wiseman

    Joined Aug 10, 2003
    Cottage Grove, Minnesota
    He's pretty much right. Most of the cars I tune run between 26-28psi on race gas, around 11.5-11.7 A/F then when they wanna run pump they just turn the boost down to 18-19 and it runs the A/F down to around 10.8 or so for a good pump gas tune, no need to switch back and forth just lower the boost.
  11. tindall2006

    tindall2006 Proven Member

    Joined Dec 26, 2006
    Huntsville, Ohio
    so your saying the computer will read where the boost is at (Via how much air is coming in the MAF) , and adjust the fuel and spark accordingly?

    I am thinking you tune the car to your max boost at WOT, though you will still be running less boost at lower RPM's, until you build it. You would naturally have to adjust the fuel curve as the boost builds. So if you turn the boost down, the ECU will just use the curve, but stop adding additional fuel because you are not getting additional boost to require it.
  12. bane3d

    bane3d Proven Member

    Joined Aug 30, 2005
    St Peters, Missouri
    Don't get me wrong on this, but I seem to remember Greg Collier was running a dual boost controller on his car before he sold it and he would run at one boost level for most of the course and when he hit the straightaways, he would change to a higher boost level as needed. How did he factor that into his tune on the car? Ninja, you on today? Could you explain the setup on your car?


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