im new want to know some things
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Northstar Engines and System Technical Discussion Discussion, im new want to know some things in Cadillac Engine Technical Discussion; well i my mom just gave me her car its a 96 sedan deville with 115k miles on it i ...
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    Frans96SS is offline Cadillac Owners Member
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    im new want to know some things

    well i my mom just gave me her car its a 96 sedan deville with 115k miles on it i wanted to know what are some free mods i can do to it and what i can do to make it faster its only my daily driver i have a 96 ss which is pretty fast now it goes 11.6 but i didnt know if like an air filter and stuff like that makes a big diff. and also how much nitrous can that hold safely and if i spray it will will happen with the traction control if it starts spinning does it cut fuel, apark or what?

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    fast32vsts is offline Cadillac Owners Member
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    Re: im new want to know some things

    Traction control will cut the spark, fuel, and will use the brakes to keep traction.

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    Re: im new want to know some things

    Quote Originally Posted by fast32vsts
    Traction control will cut the spark, fuel, and will use the brakes to keep traction.

    Traction control does not turn off the spark.


    The Cadillac/Northstar traction control has several levels of intervention.

    The immediate intervention is with the individual front brakes to inhibit wheel spin...that limits the amount the tire on that corner can spin and inherently transfers the torque to the other corner via the differential action in the transaxle final drive.

    If the brake duty cycle is too great then the traction control system "requests" torque reduction from the PCM....THEN the PCM starts cutting out cylinders by turning off the injector at individual cylinders. Depending on how much torque reduction is requested the PCM can cut out as many as 5 cylinders to reduce power. The brakes operate continuously in the mean time controlling the wheel spin at each front corner. Spark is never turned off....

    The system will still work fine with NOS...it will just have more work to do....LOL Normally, on dry pavement, the traction control never gets into any cylinder cut out...just the brakes are used for traction control. The cylinder cut out comes into play when on ice and snow and there is little or no traction and continuous heavy throttle is used.

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    BeelzeBob's Avatar
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    Re: im new want to know some things

    Quote Originally Posted by Frans96SS
    well i my mom just gave me her car its a 96 sedan deville with 115k miles on it i wanted to know what are some free mods i can do to it and what i can do to make it faster its only my daily driver i have a 96 ss which is pretty fast now it goes 11.6 but i didnt know if like an air filter and stuff like that makes a big diff. and also how much nitrous can that hold safely and if i spray it will will happen with the traction control if it starts spinning does it cut fuel, apark or what?
    Free Mods..??? There are no "free mods". Speed costs money....how fast do you want to go??? The "mod" may not cost much...but the resulting engine/trans damage might cost a lot...!!! LOL

    Rather than repeat all the discussion about making the Northstar faster why don't you read up in the archives...this has been discussed many many times.

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    Aurora By Olds is offline Cadillac Owners Fanatic
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    Re: im new want to know some things

    Quote Originally Posted by bbob
    Traction control does not turn off the spark.


    The Cadillac/Northstar traction control has several levels of intervention.

    The immediate intervention is with the individual front brakes to inhibit wheel spin...that limits the amount the tire on that corner can spin and inherently transfers the torque to the other corner via the differential action in the transaxle final drive.

    If the brake duty cycle is too great then the traction control system "requests" torque reduction from the PCM....THEN the PCM starts cutting out cylinders by turning off the injector at individual cylinders. Depending on how much torque reduction is requested the PCM can cut out as many as 5 cylinders to reduce power. The brakes operate continuously in the mean time controlling the wheel spin at each front corner. Spark is never turned off....

    The system will still work fine with NOS...it will just have more work to do....LOL Normally, on dry pavement, the traction control never gets into any cylinder cut out...just the brakes are used for traction control. The cylinder cut out comes into play when on ice and snow and there is little or no traction and continuous heavy throttle is used.
    Hmm, learn something new everyday. I always thought the PCM just retarded the timing.
    So is that what is referred to as "Torque Management?"
    When I end up getting my chip, I want to get this "cylinder cutout" portion removed, as it isalways kicking in at WOT starts as well as manual second 1-2 WOT shifts.
    Most often on the 1-2 shift, it feels like the car just dies for a second before it picks back up.....tends to be very frustrating.

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    Frans96SS is offline Cadillac Owners Member
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    Re: im new want to know some things

    Quote Originally Posted by bbob
    Free Mods..??? There are no "free mods". Speed costs money....how fast do you want to go??? The "mod" may not cost much...but the resulting engine/trans damage might cost a lot...!!! LOL

    Rather than repeat all the discussion about making the Northstar faster why don't you read up in the archives...this has been discussed many many times.
    well i know on like lt1 the free mods are like throttle body by-pass and stuf flike that so i didnt know if on the northstar u can do somethin with the air box or anything and do u guys think that with 115k miles its a bad idea to spray

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    Re: im new want to know some things

    Quote Originally Posted by Aurora By Olds
    Hmm, learn something new everyday. I always thought the PCM just retarded the timing.
    So is that what is referred to as "Torque Management?"
    When I end up getting my chip, I want to get this "cylinder cutout" portion removed, as it isalways kicking in at WOT starts as well as manual second 1-2 WOT shifts.
    Most often on the 1-2 shift, it feels like the car just dies for a second before it picks back up.....tends to be very frustrating.

    Torque management is NOT traction control.....not related, really.

    Torque management is a varying degree of spark retard that is used to tailor the torque characteristics of the power delivery to match the transmission shift event. Trust me, you don't feel it. It only occurs for several cylinder events.

    You are not getting into cylinder cutout due to traction control. The brakes have to be a full duty cycle for several seconds controlling wheelspin before the cylinder cut out starts. You really can't feel that , either, as when cylinder cutout is used to reduce the brake duty cycle for traction control the wheel spin (or potential wheel spin) due to slippery conditions is greater than the power than can be put down....so you can "feel" the roughness of the engine when cylinder cutout occurs but not in the performance at all since the engine will always be making more torque than the tires can handle if cylinder cutout occurs.

    The best way to sense or experience cylinder cutout in traction control is to get on an icy, uphill grade. Stop and floor it and hold the throttle to the floor. You will feel the brakes initially control the wheelspin and then you can sense the engine roughness as cylinders cut out...but it does not slow the car at all as the brakes let up accordingly. If you continue to hold the throttle side open the engine will keep dropping cylinders until the brakes are having to do very little to inhibit wheel spin.


    There are a lot of "traction control" and "torque management" systems on the market...by GM and others. Traction control and torque management are almost generic terms used by marketing to describe anything that limits load on the drivetrain, protects it or helps traction. The various systems operate in many different ways using brakes, spark, fuel cutout, actual throttle control (the throttle "kicker" in the older C4 Corvettes) including complete control of the throttle in drive-by-wire systems.

    The Northstar Cadillac (and Olds Aurora) systems are virtually transparent to the driver. You do not feel either of them working, really. That is not the source of the pause or delay you feel. I suspect you just feel the "hole" in the torque curve of the 4.0 liter engine on the 1-2 shift. There is actually little or no torque management on the 1-2 shift with the 4.0 Aurora engine and if there is any it is so slight and so quick that you don't feel it.

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    Re: im new want to know some things

    Quote Originally Posted by bbob

    The best way to sense or experience cylinder cutout in traction control is to get on an icy, uphill grade. Stop and floor it and hold the throttle to the floor. You will feel the brakes initially control the wheelspin and then you can sense the engine roughness as cylinders cut out...but it does not slow the car at all as the brakes let up accordingly. If you continue to hold the throttle side open the engine will keep dropping cylinders until the brakes are having to do very little to inhibit wheel spin.

    .
    I'm new to the Forum and am really impressed by it and especially your comments bbob. You are very knowledgable and I can tell you are a NS fan. I enjoy reading your comments.

    But, Please don't tell me to get on an icy hill and floor my Eldo. It ain't gonna happen.....LOL!

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    Re: im new want to know some things

    Quote Originally Posted by OlManRivah
    I'm new to the Forum and am really impressed by it and especially your comments bbob. You are very knowledgable and I can tell you are a NS fan. I enjoy reading your comments.

    But, Please don't tell me to get on an icy hill and floor my Eldo. It ain't gonna happen.....LOL!
    Try it. You can't hurt anything. You will be surprised by how well the car acts. It is designed to be able to accomodate situations like that. Really. The cars have FAR more capability than most people realize. It is hard to just get people to floor it and blow the carbon out occasionally....and we thought that people would rod them all the time....not baby them to death.

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    Re: im new want to know some things

    No way Jose'...I'll just take your word for it. I did tell my wife, when I bought it for her, that it should be blown out occassionally. We've got a '73 Eldo Conv that she's use to driving and knows about the carbon build up, but, I don't think I'll tell her about the icey hill deal............


    No sense in flirting with disaster.....lol!

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