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2G 10k pot mod question

Posted by Shamrokk, Jan 7, 2012

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  1. Shamrokk

    Shamrokk Proven Member

    80
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    Joined Jan 24, 2011
    Hattiesburg, Mississippi
    So after doing some research I've discovered i have a common 6bolt swap issue. From what I can see the fix is to wire in 10k pot into the map sensor input. My question is will this work if i don't have the sensor? Im still using the 1g intake mani and no map sensor.
     

    329  0

    1992 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  2. GSLENK

    GSLENK Proven Member

    1,233
    48
    Joined May 25, 2011
    DC, Maryland
    you could always grab a 1g harness and a 1g ecu.... probably a bigger pita than its worth. Im sure theres an easier option
     

    4K  6

    1992 Plymouth Laser RS Turbo AWD
    awd · manual · 1G DSM
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  3. knochgoon24

    knochgoon24 DSM Wiseman

    4,753
    68
    Joined Jan 29, 2008
    Troy, Michigan
    You aren't tricking the MDP sensor, you're tricking the baro sensor in the MAS.
     

    2K  1

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM

    2K  0

    1991 Eagle Talon N/T
    manual · 1G DSM

    2K  0

    1996 Mitsubishi Eclipse GST
    automatic · 2G DSM

    2K  0

    1997 Eagle Talon TSi AWD
    13.869 @ 95.090 · 2G DSM
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  4. Shamrokk

    Shamrokk Proven Member

    80
    0
    Joined Jan 24, 2011
    Hattiesburg, Mississippi
    oh ok. Thats simpler. Do i do it at the ecu or at the mas?
     

    329  0

    1992 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  5. PieEyedPiper

    PieEyedPiper DSM Wiseman

    4,317
    43
    Joined Nov 13, 2004
    North Bay Area, California
    I was under the impression that this "solution" was obsolete and that we've gotten a bit smarter (as clever as this option is) over the years. No?

    I considered it for a time, as P0300 is not very much fun, but my higher-level peers were not very enthusiastic.
     

    1K  0

    1998 Mitsubishi Eclipse GSX
    manual · 2G DSM
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  6. jimbob_843

    jimbob_843 Proven Member

    502
    1
    Joined Mar 11, 2010
    Dorchester, South Carolina
    Ive seen good things on forums about this mod. Its essentially tricking the ecu to not scan for misfires. There are a couple factors that trigger the ecu to scan and one being the barometric pressure. Wiring in the potentioner (volume control knob) alows you to lower this pressure signal to the ecu keeping it lower than the scanning goal. So ecu never sees the baro preasure it needs to scan and therefore does not scan for misfires. No more random misfire.
     

    876  0

    1995 Mitsubishi Eclipse GST
    · 2G DSM
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  7. PieEyedPiper

    PieEyedPiper DSM Wiseman

    4,317
    43
    Joined Nov 13, 2004
    North Bay Area, California
    Yes, that IS essentially what it does.

    But what of the side effects?
    If you've not got yourself a good tuning solution such as Link or an H8 setup, I don't think it'd be worth it to me to be just randomly be messing around with sh** that will lean out the car and mess with the timing to bandaid something else I did to it.
     

    1K  0

    1998 Mitsubishi Eclipse GSX
    manual · 2G DSM
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  8. T is for TURBO

    T is for TURBO Proven Member

    1,560
    16
    Joined Jan 15, 2005
    Milwaukee, Wisconsin
    There is a better way than the POT mod, it's just little pricey, but still cheaper than ECMLink...

    Kiggly Racing makes a crank trigger sensor that plugs right into the existing crank angle sensor plug on the 2g engine harness. You still need the cam angle sensor behind the cam gear for this to work, however, you can wire in a 1g cam angle sensor if you have a 1G or 2gb head that has the sensor in on the left end of the intake cam.


    For more info, read this short thread

    But as PieEyedPiper said, Link or an H8 ECU is the way to go, (or EVO 8 ECU) I vote Link, simply for the nice smooth learning curve an endless support and the pretty GUI
     
    Last edited: Jan 7, 2012

    Street Build 1K  0

    1996 Eagle Talon TSi
    manual · 2G DSM
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  9. Shamrokk

    Shamrokk Proven Member

    80
    0
    Joined Jan 24, 2011
    Hattiesburg, Mississippi
    I do plan on running ecmlink later on but funds say otherwise for now. So where doi wire this pot in at?
     

    329  0

    1992 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  10. T is for TURBO

    T is for TURBO Proven Member

    1,560
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    Joined Jan 15, 2005
    Milwaukee, Wisconsin
    Second to last page

    I would Highly suggest getting link asap however, but until then, the pot mod should work just fine
     

    Street Build 1K  0

    1996 Eagle Talon TSi
    manual · 2G DSM
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  11. BuiltNotBought98

    BuiltNotBought98 Probationary Member

    2
    0
    Joined Mar 11, 2012
    Deer Park, Washington
    I'm having the misfire issue as well, but my CEL has not turned off since the swap, I get the misfire at cruise and hi rpm, like everyone else, I have a 1g green top cas, on a 98 Gsx, with 2g head, will the pot mod still work? If not ill run Ceddymods....
     
  12. pushen 160

    pushen 160 Probationary Member

    13
    0
    Joined Jan 23, 2013
    american falls, Idaho
    The pot mod works with no ill effects you wire it into the baro wire on the ecu wire harnes think it's 85 pin but don't remember check rre for this will show what pin wire a 5 k knob from radio shack works solder everything. I did it a few years ago and it runs with nothing bad people say it makes your car run lean and other things it does not your car will run normal.
     
  13. laurence riggs

    laurence riggs Probationary Member

    14
    0
    Joined Dec 16, 2019
    Duncan, BC, Canada
    ok I'm just catching up hear. I just got the 97 gst it has the magnus motorsport swap with the 1g swap. The guy I got it from said he was having a misfire, I was thinking it was the 955cc injectors and the chipped eprom ecu ( ecm link v3 ). New to this hole thing after I got the misfire code I started doing a tune up new plugs wires and then did the coil pack and still the misfire. So started to look at forums and the magnus motorsport and misfire. I came across the magnus motorsport and the potentiometer, With my misfire I get a stumble at 4500rpms will this fix this problem? Any help would be grate.
     

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