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Thread: Commander 950 Setup Help

  1. #1

    Default Commander 950 Setup Help

    So I am getting ready to install a Commander 950 on my Stealth Ram 350. It was previously a TPI in a 85 Camaro.

    The first question is about the cooling fan setup. I have the Stealth Ram harness but it doesn't have the fan wired into it. Can I just put a pin into C1 and I am going to guess it grounds to trigger a relay?

    The second question is about the knock sensor. Can I use the existing ESC and just wire same wire that was in the old ECU into pin B7? I think I have to change my ESC and sensor since my car originally came with a 305.

    What is the IPU connector?

    Can I control the TCC lockup at all?

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,801

    Default

    Quote Originally Posted by seiplez View Post
    The first question is about the cooling fan setup. Can I just put a pin into C1 and I am going to guess it grounds to trigger a relay?
    http://www.holley.com/data/Products/...9R10158rev.pdf (C950 Electric Fan Wiring Instructions)
    http://www.holley.com/534-134.asp (C950 Electric Fan Relay/Wiring Kit)

    The second question is about the knock sensor. Can I use the existing ESC and just wire same wire that was in the old ECU into pin B7?
    http://www.holley.com/data/Products/.../199R10163.pdf (C950 Knock Sensor Instructions)
    http://www.chevytalk.org/fusionbb/sh...hp?tid/183944/ (My C950 Knock Sensor Experience)

    What is the IPU connector?
    IPU = Inductive Pick-Up. Basically for a magnetic crank trigger sensor.
    http://www.holley.com/data/Products/...9R10161rev.pdf (C950 Magnetic Pick-Up Wiring Instructions)
    http://www.holley.com/534-135.asp (C950 Magnetic Pick-Up Wiring Harness)

    Can I control the TCC lockup at all?
    The C950 does not have a specific torque converter lockup function, however, you can try using the Output 1 (D9) as a crude TCC lockup.
    Output 1 (D9) outputs an RPM, TPS or MAP activated ground signal. Connect this to relay terminal #85 and find a way to power terminal #86 when in Drive.
    (Maybe use the signal from the neutral safety switch or something - may require a second relay to convert a ground signal to a 12V signal or vise-versa.)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3

    Default

    Your the man!!! Those where the answers I was looking for. Thank you!!!

    I guess the IPU connector will not be used in my setup?
    I am using the GM small cap HEI distributor and an MSD 6AL which I believe can be wired the same way it is right now on the OEM ECM.

    Does the park/neutral input need to be grounded to fire the C950? I have a B&M shifter and don't remember if I wired it back up.

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,801

    Default

    Quote Originally Posted by seiplez View Post
    I guess the IPU connector will not be used in my setup?
    No, you won't use the IPU connector.
    Use the Holley 534-138 GM HEI ignition adapter harness:
    http://www.jegs.com/i/Holley/510/534-138/10002/-1
    ("Plug & Play" into main harness.)

    I am using the GM small cap HEI distributor and an MSD 6AL which I believe can be wired the same way it is right now on the OEM ECM.
    See the figure 81 wiring diagram on page 106 of the C950 Manual:
    http://www.holley.com/data/TechServi...l/R10149-7.pdf (C950 Manual)

    Does the park/neutral input need to be grounded to fire the C950? I have a B&M shifter and don't remember if I wired it back up.
    When I mentioned the neutral safety switch in my last post, I wasn't referring to this Park/Neutral Input feature. The Park/Neutral Input function isn't necessary.
    The only time the Park/Neutral Input feature would be required is if a potent engine (which idles higher) had a stock torque converter (mismatched components).

    Excerpt from page 19 of the C950 manual:
    Park/Neutral Input – Triggered from a ground from the neutral safety switch. It allows for the IAC to a programmable value when the vehicle is put into gear to prevent stalling. It is rare that it is needed for this function. 99.8% of stalling problems when a vehicle is placed into gear is from improper tuning. This wire needs to be GROUNDED when the vehicle is in park or neutral.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  5. #5

    Default

    Thank you for the help!!! That answered my questions for now. I'm sure I will be back when I start the install and tuning!

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